Microwave-assisted Suzuki–Miyaura cross-coupling of 2-alkyl and 2-alkenyl-benzo-1,3,2-diazaborolanes
摘要:
Nitrogen-based boronate esters, such as 2-octyl-benzo-1,3,2-diazaborolane, 2-phenethyl-benzo-1,3,2-diazaborolane, and 2-{(1E)-hexenyl}-benzo-1,3,2-diazaborolane have been shown to be suitable coupling partners with arylhalides in microwave accelerated Suzuki cross-coupling reactions. Reaction yields of up to 89% were achieved. The use of a silicon group attached to the nitrogen atom, proved to enhance the reactivity of 2-octyl-benzo-1,3,2-diazaborolane. (C) 2011 Elsevier Ltd. All rights reserved.
Ligand-free nickel-catalyzed semihydrogenation of alkynes with sodium borohydride: a highly efficient and selective process for cis-alkenes under ambient conditions
作者:Xin Wen、Xiaozhen Shi、Xianliang Qiao、Zhilei Wu、Guoyi Bai
DOI:10.1039/c7cc02140b
日期:——
Highly efficient and selective semihydrogenation of alkynes has been achieved using ligand-free Ni nanoparticles and sodium borohydride under ambient conditions.
已经在常温下使用无配体的镍纳米颗粒和硼氢化钠实现了炔烃的高效选择性半氢化。
SPIROIMIDAZOLONE DERIVATIVE
申请人:Esaki Toru
公开号:US20120270838A1
公开(公告)日:2012-10-25
The present invention relates to a compound represented by the following formula (1):
wherein W, X, Y, R
1
, R
2
, R
33
, R
34
, m and n are as defined in the claims, or a pharmacologically acceptable salt thereof.
Microwave-assisted Suzuki–Miyaura cross-coupling of 2-alkyl and 2-alkenyl-benzo-1,3,2-diazaborolanes
作者:Siphamandla W. Hadebe、Siphamandla Sithebe、Ross S. Robinson
DOI:10.1016/j.tet.2011.03.095
日期:2011.6
Nitrogen-based boronate esters, such as 2-octyl-benzo-1,3,2-diazaborolane, 2-phenethyl-benzo-1,3,2-diazaborolane, and 2-(1E)-hexenyl}-benzo-1,3,2-diazaborolane have been shown to be suitable coupling partners with arylhalides in microwave accelerated Suzuki cross-coupling reactions. Reaction yields of up to 89% were achieved. The use of a silicon group attached to the nitrogen atom, proved to enhance the reactivity of 2-octyl-benzo-1,3,2-diazaborolane. (C) 2011 Elsevier Ltd. All rights reserved.