共查询到20条相似文献,搜索用时 15 毫秒
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Wei Ding Naohiko Yoshikai 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(8):2522-2526
An intermolecular [2+2] cycloaddition reaction between an alkyne and an allene is reported. In the presence of a cobalt(I)/diphosphine catalyst, a near equimolar mixture of the alkyne and allene is converted into a 3‐alkylidenecyclobutene derivative in good yield with high regioselectivity. The reaction tolerates a variety of internal alkynes and mono‐ or disubstituted allenes bearing various functional groups. The reaction is proposed to involve regioselective oxidative cyclization of the alkyne and allene to form a 4‐alkylidenecobaltacyclopentene intermediate, with subsequent C?C reductive elimination. 相似文献
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Siyang Xing Yan Li Zhen Li Chang Liu Jun Ren Zhongwen Wang 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2011,123(52):12813-12817
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Fangrui Zhong Xiaoyu Han Youqing Wang Yixin Lu 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2011,123(34):7983-7987
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Andrew G. Dalling Takayuki Yamauchi Niall G. McCreanor Lydia Cox John F. Bower 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(1):227-231
Rh‐catalyzed carbonylative C?C bond activation of cyclopropylamides generates configurationally stable rhodacyclopentanones that engage tethered alkenes in (3+1+2) cycloadditions. These studies provide the first examples of multicomponent cycloadditions that proceed through C?C bond activation of “simple” electron poor cyclopropanes. 相似文献
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