Synthesis of 2-(Benzoylmethylene)imidazolidines and -hexahydropyrimidines by Condensation of Ethyl Benzoylacetimidates With 1,2-Ethanediamine or 1,3-Propandiamine, and Some Addition Reactions
Synthesis of 2-(Benzoylmethylene)imidazolidines and -hexahydropyrimidines by Condensation of Ethyl Benzoylacetimidates With 1,2-Ethanediamine or 1,3-Propandiamine, and Some Addition Reactions
Heterocyclen via Mannich-Kondensation, 6. Mitt. Synthese von 2-Amino-3-pyridyl-phenylketonen
作者:Mónica Söllhuber-Kretzer、Reinhard Troschütz、Hermann J. Roth
DOI:10.1002/ardp.19823150303
日期:——
Benzoylacetimidsäure‐ethylester (1a) und seine Derivate 1b, 1c sowie Benzoylacetamidin (2a) liegen in Lösung in der Enolform vor. Mit Keton‐Mannichbasen setzen sie sich zu 2‐Amino‐3‐pyridyl‐phenylketonen um.
HUANG ZHI-TANG; LIU ZHI-RONG, SYNTHESIS,(1987) N 4, 357-362
作者:HUANG ZHI-TANG、 LIU ZHI-RONG
DOI:——
日期:——
Synthesis of 2-(Benzoylmethylene)imidazolidines and -hexahydropyrimidines by Condensation of Ethyl Benzoylacetimidates With 1,2-Ethanediamine or 1,3-Propandiamine, and Some Addition Reactions
作者:Zhi-tang Huang、Zhi-rong Liu
DOI:10.1055/s-1987-27942
日期:——
Ethyl benzoylacetimidates react with 1,2-ethanediamine or 1,3-propanediamine in absolute ethanol to afford the 2-(benzoylmethylene)-imidazolidines or -hexahydropyrimidines, respectively. The structure of these products as ketene aminals is confirmed by spectral data. Electrophilic additions of hydrochloric acid and diethyl diazenedicarboxylate to the ketene aminals are also described.