Rhodium-Catalyzed Acylation of Vinylsilanes with Acid Anhydrides
作者:Motoki Yamane、Kazuyoshi Uera、Koichi Narasaka
DOI:10.1246/bcsj.78.477
日期:2005.3
A catalytic acylation of vinylsilane with acid anhydride is accomplished by the use of [RhCl(CO)2]2, in which the transmetalation between vinylsilane and rhodium(I) carbonyl complex plays a key rol...
Iron-Catalyzed α,β-Dehydrogenation of Carbonyl Compounds
作者:Xiao-Wei Zhang、Guo-Qing Jiang、Shu-Hui Lei、Xiang-Huan Shan、Jian-Ping Qu、Yan-Biao Kang
DOI:10.1021/acs.orglett.1c00043
日期:2021.3.5
An iron-catalyzedα,β-dehydrogenation of carbonylcompounds was developed. A broad spectrum of carbonyls or analogues, such as aldehyde, ketone, lactone, lactam, amine, and alcohol, could be converted to their α,β-unsaturated counterparts in a simple one-step reaction with high yields.
Substituted Spiro Compounds and Their Use for Producing Pain-Relief Medicaments
申请人:Frank Robert
公开号:US20080269271A1
公开(公告)日:2008-10-30
The present invention relates to substituted spiro compounds, to processes for preparing them, to medicaments comprising these compounds and to the use of these compounds for producing medicaments.
Cobalt‐Catalyzed Reductive Dimethylcyclopropanation of 1,3‐Dienes
作者:Jacob Werth、Christopher Uyeda
DOI:10.1002/anie.201807542
日期:2018.10.15
variant of the Simmons–Smith reaction that enables the efficient dimethylcyclopropanation of 1,3‐dienes using a Me2CCl2/Zn reagent mixture. The reactions proceed with high regioselectivity based on the substitution pattern of the 1,3‐diene. The products are vinylcyclopropanes, which serve as substrates for transition‐metal‐catalyzed ring‐opening reactions, including 1,3‐rearrangement and [5+2] cycloaddition
Palladium-Catalyzed [4+2] Annulation of Aryl and Alkenyl Carboxamides with 1,3-Dienes via C–H Functionalization: Synthesis of 3,4-Dihydroisoquinolones and 5,6-Dihydropyridinones
作者:Manman Sun、Jinshan Li、Weida Chen、Haijian Wu、Jianguo Yang、Zhiming Wang
DOI:10.1055/s-0039-1690219
日期:2020.4
Palladium-catalyzed [4+2] annulation of aryl and alkenyl carboxamides with 1,3-dienes viaC–Hfunctionalization is developed using air as the terminal oxidant. The method demonstrates good functional group tolerance and high stereoselectivity, affording a series of 3,4-dihydroisoquinolones and 5,6-dihydropyridinones in yields of up to 99%. Palladium-catalyzed [4+2] annulation of aryl and alkenyl carboxamides