Add to ORKGIn this communication we want to report our results regarding the reaction of N-imidoyliminotriphenylphosphorane and aldehydes. The reaction affords 3,4-dihydroquinazoline and/or quinazoline. the mechanism probably involves an aza-Wittig reaction followed by electrocyclic ring closure of the 1,3-diaza-1,3-diene intermediate. Subsequent [1,5] sygmatropic hydrogen shift results in the formation of 3,4-dihydroquinazoline that may aromatize spontaneously in the reaction condition to quinazoline
Active heterocyclic compounds are one of the main topics of interest for the medicinal chemists as t...
An efficient approach to bridged pentacyclic nitrogen heterocycles via the tandem acylation/intramol...
An efficient approach to bridged pentacyclic nitrogen heterocycles via the tandem acylation/intramol...
Recently we reported a new synthesis of quinazoline ring starting from N-imidoyliminotriphenylphosph...
N-imidoyliminotripheny]phosphorane reacts with aliphatic and aromatic aldehydes to give via an 1,3-d...
Treatment of S,S-dimethyl-N-(N-arylbenzimidoyl)sulfimides with enamines derived from ketones gives 4...
The [4+2] cycloaddition between 2,4-diphenylpyrimidine ortho-quinodimethane and dimethyl acetylenedi...
The [4+2] cycloaddition between 2,4-diphenylpyrimidine ortho-quinodimethane and dimethyl acetylenedi...
peer reviewedThe reaction of α,β-unsturated aldehydes with diazoesters primarily gives unstable 1,3-...
The thesis reports a study of new methods of modification of the medicinally important quinazoline s...
An efficient route to <i>N</i><sup>4</sup>-substituted 2,4-diaminoquinazolines has been developed by...
2-(2-Aminophenyl)quinazoline-4-amine, prepared from a quinazolino[3,4-a]quinazoline, were reacted wi...
An efficient route to <i>N</i><sup>4</sup>-substituted 2,4-diaminoquinazolines has been developed by...
[出版社版]The reaction of ο-quinones and α-diketones with N-(phenylthiomethyl)-λ5-phosphazene presumably...
The reaction of N-(2-Chloromethylphenyl)benzenesulfonamides (1) with N-benzylideneamines (2) gives 1...
Active heterocyclic compounds are one of the main topics of interest for the medicinal chemists as t...
An efficient approach to bridged pentacyclic nitrogen heterocycles via the tandem acylation/intramol...
An efficient approach to bridged pentacyclic nitrogen heterocycles via the tandem acylation/intramol...
Recently we reported a new synthesis of quinazoline ring starting from N-imidoyliminotriphenylphosph...
N-imidoyliminotripheny]phosphorane reacts with aliphatic and aromatic aldehydes to give via an 1,3-d...
Treatment of S,S-dimethyl-N-(N-arylbenzimidoyl)sulfimides with enamines derived from ketones gives 4...
The [4+2] cycloaddition between 2,4-diphenylpyrimidine ortho-quinodimethane and dimethyl acetylenedi...
The [4+2] cycloaddition between 2,4-diphenylpyrimidine ortho-quinodimethane and dimethyl acetylenedi...
peer reviewedThe reaction of α,β-unsturated aldehydes with diazoesters primarily gives unstable 1,3-...
The thesis reports a study of new methods of modification of the medicinally important quinazoline s...
An efficient route to <i>N</i><sup>4</sup>-substituted 2,4-diaminoquinazolines has been developed by...
2-(2-Aminophenyl)quinazoline-4-amine, prepared from a quinazolino[3,4-a]quinazoline, were reacted wi...
An efficient route to <i>N</i><sup>4</sup>-substituted 2,4-diaminoquinazolines has been developed by...
[出版社版]The reaction of ο-quinones and α-diketones with N-(phenylthiomethyl)-λ5-phosphazene presumably...
The reaction of N-(2-Chloromethylphenyl)benzenesulfonamides (1) with N-benzylideneamines (2) gives 1...
Active heterocyclic compounds are one of the main topics of interest for the medicinal chemists as t...
An efficient approach to bridged pentacyclic nitrogen heterocycles via the tandem acylation/intramol...
An efficient approach to bridged pentacyclic nitrogen heterocycles via the tandem acylation/intramol...