Palladium(0)-Catalyzed Methylcyclopropanation of Norbornenes with Vinyl Bromides and Mechanism Study
作者:Jiangang Mao、Hujun Xie、Weiliang Bao
DOI:10.1021/acs.orglett.5b01603
日期:2015.8.7
cycloadditions of vinyl bromides to norbornenes catalyzed by Pd(OAc)2/PPh3 in the presence of CH3ONa and CH3OH has been established. A methylcyclopropane subunit was installed by a 3-fold domino procedure involving a key protonation course. Preliminary deuterium-labeling studies revealed that the proton came from methyl of CH3OH and also exposed an additional hydrogen/deuterium exchange process. These two
在CH 3 ONa和CH 3 OH存在下,由Pd(OAc)2 / PPh 3催化的乙烯基溴的[2 + 1]环加成至降冰片烯的异常甲基环丙烷化反应已经建立。通过涉及关键质子化过程的3倍多米诺骨牌程序安装了甲基环丙烷亚基。初步的氘标记研究表明,质子来自CH 3 OH的甲基,并且还暴露了额外的氢/氘交换过程。这两个与质子有关的反应是完全化学选择性的。