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Divergent Construction of Pyrazoles via Michael Addition of
N‑Arylhydrazones to 1,2-Diaza-1,3-dienes, file e18b865d-5a19-1ee6-e053-3a05fe0ae544
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48
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Regioselective Formation of 5-Methylene-6-methoxy-1,4,5,6-tetrahydropyridazines from the [4+2]-Cycloaddition Reaction of In Situ Generated 1,2-Diaza-1,3-dienes with Methoxyallene, file e18b865d-541a-1ee6-e053-3a05fe0ae544
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26
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Double Michael addition/aza-cyclization: a valuable sequence for the construction of symmetrical and unsymmetrical spirobarbiturate-pyridines, file e18b865d-5719-1ee6-e053-3a05fe0ae544
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24
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1,3,5-Trisubstituted and acyl-1,3-disubstituted hydantoin derivatives via novel sequential three-component reaction, file e18b865b-8411-1ee6-e053-3a05fe0ae544
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20
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Synthesis of Densely Functionalized
3a,4-Dihydro‑1H‑Pyrrolo[1,2‑b]Pyrazoles
via Base Mediated Domino Reaction of
VinylMalononitrileswith 1,2-Diaza-1,3-dienes, file e18b865b-897c-1ee6-e053-3a05fe0ae544
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9
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Tandem Aza-Wittig/Carbodiimide-Mediated Annulation Applicable to 1,2-Diaza-1,3-dienes for the One-Pot Synthesis of Fully Substituted 1,2-Diaminoimidazoles, file e18b865b-8cb9-1ee6-e053-3a05fe0ae544
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8
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Reaction of 1,2-Diaza-1,3-butadienes with thiol derivates: a versatile construction of nitrogen/sulfur containing heterocycles, file e18b865b-837b-1ee6-e053-3a05fe0ae544
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7
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Divergent Behaviour of the Reactions Between 1,2-Diaza-1,3-dienes and 2,5-Dioxoimidazolidin-4-ylidene-succinates, file e18b865b-897b-1ee6-e053-3a05fe0ae544
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7
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Divergent Construction of Pyrazoles via Michael Addition of
N‑Arylhydrazones to 1,2-Diaza-1,3-dienes, file e18b865c-237a-1ee6-e053-3a05fe0ae544
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7
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A Novel Solvent-free Approach to Imidazole containing Nitrogen-Bridgehead Heterocycles, file e18b865b-897d-1ee6-e053-3a05fe0ae544
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6
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Novel Tetrahydropyridazines by Unusual Aza-Diels-Alder Reaction of Electron-poor 1,2-Diaza-1,3-dienes with Electron-poor Alkenes under Solvent Free Conditions, file e18b865b-897e-1ee6-e053-3a05fe0ae544
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4
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Double Michael addition/aza-cyclization: a valuable sequence for the construction of symmetrical and unsymmetrical spirobarbiturate-pyridines, file e18b865b-ca80-1ee6-e053-3a05fe0ae544
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3
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Facile synthesis of new substituted tetrahydro-1H-indoles, file e18b865b-7a0d-1ee6-e053-3a05fe0ae544
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2
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Easy one-pot synthesis of fused heterocycles from 1,2-diaza-1,3-dienes, file e18b865b-840d-1ee6-e053-3a05fe0ae544
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2
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Insights into diastereoisomeric characterization of tetrahydropyridazine amino acid derivatives: crystal structures and gas phase ion chemistry, file e18b865c-166a-1ee6-e053-3a05fe0ae544
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2
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Regioselective Formation of 5-Methylene-6-methoxy-1,4,5,6-tetrahydropyridazines from the [4+2]-Cycloaddition Reaction of In Situ Generated 1,2-Diaza-1,3-dienes with Methoxyallene, file e18b865c-2378-1ee6-e053-3a05fe0ae544
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2
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Synthesis of Tetrahydropyridazine Amino Acid Derivatives by a Formal [4+2| Cycloaddition Reaction of 1,2-Diaza-1,3-dienes with Dehydroalanine Esters, file e18b865c-23e9-1ee6-e053-3a05fe0ae544
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2
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Unusual peptidomimetic reaction of 1,2-diaza-1,3-butadienes: straightforward entry to 2,3,6-triazabicyclo[3.2.1]oct-3-enes, 5-oxo-4,5-dihydro-2-pyrazines, and 2-carbonyl-2-oxopropylaminoacetates, file e18b865b-7a0e-1ee6-e053-3a05fe0ae544
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1
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Solvent-free reactions of some 1,2-diaza-1,3-butadienes with phosphites: environmentally friendly access to new diazaphospholes and E-hydrazonophosphonates, file e18b865b-7a0f-1ee6-e053-3a05fe0ae544
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1
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Unexpected ring closure between hydrazono and nitro groups: a useful synthesis of substituted pyrazole N-oxides, file e18b865b-7b19-1ee6-e053-3a05fe0ae544
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1
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Straightforward access to pyrazines, piperazinones, and quinoxalines by reaction of 1,2-diaza-1,3-butadienes with 1,2-diamines under solution, solvent free, or solid-phase conditions, file e18b865b-7b1a-1ee6-e053-3a05fe0ae544
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1
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An alternative route to pyrrolotriazoles and other N-bridgehead heterocycles, file e18b865b-7b1b-1ee6-e053-3a05fe0ae544
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1
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Regioselective synthesis of new 1-aminopyrroles and 1-amino-4,5,6,7-tetrahydroindoles by one-pot 'conjugate addition/cyclization' reactions of 1,3-bis(silyl enol ethers) with 1,2-diaza-1,3-butadienes, file e18b865b-7c6b-1ee6-e053-3a05fe0ae544
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1
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Improved synthesis of pyrroles and indoles via Lewis acid-catalyzed Mukaiyama-Michael type addition/heterocyclization of enolsilyl derivatives with 1,2-diaza-1,3-butadienes. Role of the catalyst in the reaction mechanism, file e18b865b-7c6d-1ee6-e053-3a05fe0ae544
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1
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Efficient synthesis and environmentally friendly reactions of PEG-supported 1,2-diaza-1,3-butadiene, file e18b865b-7c6f-1ee6-e053-3a05fe0ae544
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1
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Unexpected regioselectivity in the reaction between cycloalkenyl-1-diazenes and thioamides: useful entry to fused cycloalkyl-thiazoline and cycloalkyl-thiazoline-pyrazole systems, file e18b865b-8102-1ee6-e053-3a05fe0ae544
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1
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Direct access to variously substituted 2-imino-4-thiazolines, file e18b865b-818a-1ee6-e053-3a05fe0ae544
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1
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Study of the nucleophilic behaviour of N-phenylbenzamidine towards 1,2-diaza-1,3-dienes: domino reactions for imidazole scaffolds, file e18b865b-818d-1ee6-e053-3a05fe0ae544
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1
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Divergent Regioselective Synthesis of 2,5,6,7-Tetrahydro-1H-1,4-diazepin-2-ones and 5H-1,4-Benzodiazepines, file e18b865b-8621-1ee6-e053-3a05fe0ae544
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1
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Synthesis of Highly Functionalized 1,3-Oxathiazoles via an Unusual [4+1] Annulation alpha,alpha'-Dioxothione with 1,2-Diaza-1,3-dienes, file e18b865b-8979-1ee6-e053-3a05fe0ae544
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1
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Regioselective [1N+2C+2C] assembly of fully decorated pyrroles from primary amines, 1,2-diaza-1,3-dienes and 2,3-allenoates, file e18b865b-af0b-1ee6-e053-3a05fe0ae544
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1
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α-Azido Ketones, Part 8: Base-Induced Coupling of α-Azido Ketones with a 1,2-Diaza-1,3-diene as a Michael Acceptor, file e18b865c-1669-1ee6-e053-3a05fe0ae544
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1
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Eclectic 1-aryl-1,2-diaza-1,3-butadienes: valuable tools for the preparation of pyrrol-2-ones, 1-arylpyrazoles, 2-(3-oxopyrazol-4-yl)malonates and 4-(2-oxopyrrol-3-yl)pyrazol-3-ones, file e18b865c-18b9-1ee6-e053-3a05fe0ae544
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1
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Straightforward entry into 5-hydroxy-1-aminopyrrolines and the corresponding pyrroles from 1,2-diaza-1,3-butadienes, file e18b865c-18bb-1ee6-e053-3a05fe0ae544
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1
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1,2-Diaza-1,3-butadienes: just a nice class of compounds, or powerful tools in organic chemistry? Reviewing an experience, file e18b865c-18c3-1ee6-e053-3a05fe0ae544
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1
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Improved synthesis of substituted quinoxalines from new N=N-polymer-bound 1,2-diaza-1,3-butadienes, file e18b865c-193a-1ee6-e053-3a05fe0ae544
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1
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Expeditious synthesis of new 1,2,3-thiadiazoles and 1,2,3-selenadiazoles from 1,2-diaza-1,3-butadienes via Hurd-Mori reactions, file e18b865c-193c-1ee6-e053-3a05fe0ae544
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1
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2-Oxohydrazones, 4-Hydrazono-1H-pyrazol-5-ones, and derived products by air oxidation of 1,2-hydrazino-hydrazones, file e18b865c-1942-1ee6-e053-3a05fe0ae544
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1
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Easy synthesis of new 2-oxo-2,3-dihydro-1H-pyrrolo[1,2-b]pyrazole systems, file e18b865c-1944-1ee6-e053-3a05fe0ae544
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1
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Aspects of the chemistry of functionalized 1-phenylpyrazoles available from 1,2-diaza-1,3-butadienes and 2-phenylazo-1,3-dicarbonyl compounds, file e18b865c-1945-1ee6-e053-3a05fe0ae544
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1
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Easy access to (E,Z)-β-nitro-α-β-olefinated hydrazones, 6-oxo-1,6-dihydropyridazines, and 4-chloro-1-aminopyrroles by domino reactions of 1,2-diaza-1,3-butadienes with halogen-coactivated methylene or methine compounds, file e18b865c-19a3-1ee6-e053-3a05fe0ae544
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1
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Novel and convenient synthesis of 1,4-dihydropyridazines and pyridazines from conjugated azoalkenes, file e18b865c-19a5-1ee6-e053-3a05fe0ae544
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1
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Synthesis and reactions of some 4-chloro-4-alkoxycarbonyl-1,2-diaza-1,3-butadienes, file e18b865c-19a6-1ee6-e053-3a05fe0ae544
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1
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Chemo, regio, and stereoselectivity in the olefination of hydrazone 1,4-adducts between conjugated azoalkenes and sulphur co-activated methylene compounds, file e18b865c-1b45-1ee6-e053-3a05fe0ae544
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1
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Double 1,4-addition of malonate to 1,2-diaza-1,3-butadienes: a useful route to previously unknown symmetric and unsymmetric 1,6-dioxo-2,7-diazaspiro[4.4]nona-3,8-dienes, file e18b865c-1e59-1ee6-e053-3a05fe0ae544
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1
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Simple and convenient preparation of new highly protected aziridines fused with pyrroline rings, file e18b865c-1eb1-1ee6-e053-3a05fe0ae544
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1
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First preparation and reaction of polymer-bound 1,2-diaza-1,3-butadienes. A convenient entry to 4-triphenylphosphoranilidene-4,5-dihydropyrazol-5-ones, file e18b865c-1fce-1ee6-e053-3a05fe0ae544
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1
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Straightforward entry to new 4-substituted-1,2,3-thiadiazoles from 1,2-diaza-1,3-butadienes via Hurd-Mori reaction, file e18b865c-20ae-1ee6-e053-3a05fe0ae544
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1
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Solid-phase synthesis of triphenylphosphoranylidene-4,5-dihydropyrazol-5-ones, 4-aminocarbonyl-pyrroles, 4-methoxy-1H-pyrazol-5(2H)-ones and 1,2-thiazolin-4-ones from polymer-bound 1,2-diaza-1,3-butadienes, file e18b865c-20b0-1ee6-e053-3a05fe0ae544
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1
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1-Amino-2-chloromethylene -2,3-dihydropyrroles by unusual reaction of conjugated azoalkenes with 2-chloro-1,3-dicarbonyl compounds, file e18b865c-20b5-1ee6-e053-3a05fe0ae544
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1
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Inverse electron-demand Diels-Alder reactions of (E)-3-diazenylbut-2-enes in water, file e18b865c-2254-1ee6-e053-3a05fe0ae544
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1
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A facile synthesis of deaza analogues of the bis-indole marine alkaloid topsentin, file e18b865c-2383-1ee6-e053-3a05fe0ae544
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1
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Highly diastereoselective 1,3-dipolar cycloadditions of chiral non-racemic nitrones to 1,2-diaza-1,3-dienes: an experimental and computational investigation, file e18b865c-25ef-1ee6-e053-3a05fe0ae544
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1
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Mass spectrometric studies of 2-aryl-5-acetylthiazole derivatives, file e18b865c-27d9-1ee6-e053-3a05fe0ae544
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1
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Efficient synthesis of novel polyfunctionalised 4,5'-bithiazol-4'-ol derivatives, file e18b865c-2b21-1ee6-e053-3a05fe0ae544
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1
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Regioselective role of the hydrazide moiety in the formation of complex pyrrole-pyrazole systems, file e18b865c-2f10-1ee6-e053-3a05fe0ae544
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1
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Efficient simultaneous closure of polysubstituted 1-aminopyrrole ring spaced by a variable number of methylene groups, file e18b865c-2f11-1ee6-e053-3a05fe0ae544
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1
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Sequential construction of complex pyrrole-pyrrole or pyrrole-pyrazole systems from 1,2-diaza-1,3-butadienes, file e18b865c-2f12-1ee6-e053-3a05fe0ae544
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1
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Synthesis of 2-iminothiazoline derivatives by sequential conjugated addition/annulation/ring opening reaction, file e18b865c-31ec-1ee6-e053-3a05fe0ae544
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1
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Mass spectrometry characterization of substituted 2-thiazolin-4-one derivatives, file e18b865c-31f0-1ee6-e053-3a05fe0ae544
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1
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1,2-Diaza-1,3-butadienes: a new approach to the synthesis of selenoheterocycles, file e18b865c-31f2-1ee6-e053-3a05fe0ae544
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1
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Facile Odourless Quantitative Synthesis of 3-Hydroxy-3,4-Dihydro-2H-1,4-Thiazines, file e18b865d-5b3f-1ee6-e053-3a05fe0ae544
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1
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| Totale |
224 |