3-(4-Chlorophenyl)-1-(4-ethylphenyl)prop-2-en-1-one 、 丙二酸二甲酯 以dimethyl 2-(1-(4-chlorophenyl)-3-(4-ethylphenyl)-3-oxopropyl)malonate was obtained as pale yellowish solid的产率得到diethyl 2-(3-(4-chlorophenyl)-3-oxo-1-phenylpropyl)malonate
4-氯苯甲醛 、 对乙基苯乙酮 以3-(4-chlorophenyl)-1-(4-ethylphenyl)prop-2-en-1-one was obtained as pale yellowish solid的产率得到3-(4-Chlorophenyl)-1-(4-ethylphenyl)prop-2-en-1-one
3-b]furan-4,9-diones has been developed by N-iodosuccinimide (NIS)-induced enone difunctionalization with 2-hydroxy-1,4-naphthoquinones. This reaction involved sequential Michael addition, intramolecular oxidative cyclization and dehydrogenative aromatization to form new C–C and C–O bonds at the α and β positions of the enones. Various enones survived under the reaction conditions and the corresponding products
A Straightforward Synthesis of Pyrazolines and Pyrazoles: Palladium-Catalyzed Carbonylative Vinylation-Cyclocondensation Reactions of Aryl Halides
作者:Xiao-Feng Wu、Helfried Neumann、Matthias Beller
DOI:10.1002/ejoc.201100654
日期:2011.7.19
A novel consecutive one-pot synthesis of pyrazolines and pyrazoles starting from simple arylhalides, styrenes, carbon monoxide, and hydrazines has been established. Palladium-catalyzedcarbonylative vinylation of arylhalides gave the corresponding chalcones, which are trapped in situ by addition of hydrazines.