Synthesis of 3-Benzoyl Acrylates/Acrylamides via Dehydrogenation of 3-Benzoyl Propionates/Propionamides Using IBX/p-TsOH
作者:Ziyuan Li、Yiyun Wang、Changhua Tang、Jinyi Xu、Xiaoming Wu、Hequan Yao
DOI:10.1002/cjoc.201090225
日期:——
Dehydrogenation by IBX/p‐TsOH is applied to the conversion of 3‐benzoyl propionates/propionamides to 3‐benzoyl acrylates/acrylamides in moderate to excellent yields. The reaction time for the dehydrogenation of 3‐benzoyl propionamides was remarkably shorter than that for the dehydrogenation of esters.
Palladium-catalyzed selective hydrogenolysis of N-alkyl(aryl)-substituted γ-keto amides as an approach to γ-lactams or linear amides
作者:O. V. Turova、V. G. Berezhnaya、E. V. Starodubtseva、M. G. Vinogradov
DOI:10.1007/s11172-015-0978-3
日期:2015.5
A palladium-catalyzed hydrogenolysis of N-substituted γ-keto amides can proceed with participation of tautomeric 5-hydroxypyrrolidin-2-ones and give either pyrrolidin-2-ones, or linear amides, or their mixtures, depending on the substrate structure.
N-Substituted isothiazol-3(2H)-ones can be easily prepared fromN-substituted 3-benzoylpropi-onamides in two experimentally simple steps, in satisfactory overall yields. Reaction of the amides with excess thionylchloride results in the formation of N-substituted 5-benzoylisothiazol-3(2H)-ones, which are readily debenzoylated with alkali to the corresponding N-substituted isothiazol-3(2H)-ones. This