Rhodium(II)-catalyzed olefin cyclopropanation with the phenyliodonium ylide derived from Meldrum's acid
Rhodium(II)-catalyzed olefin cyclopropanation with the phenyliodonium ylide derived from Meldrum's acid
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DOI：
10.1016/s0957-4166(03)00029-6
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发表时间：
2003-04-04
影响因子：
--
通讯作者：
Robert, E
中科院分区：
文献类型：
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作者：
Müller, P;Allenbach, Y;Robert, E
由Meldrum酸衍生的苯基碘鎓叶立德3a在铑（II）羧酸盐催化剂存在下与烯烃反应得到环丙烷。该反应是立体特异性的。对于戊-1-烯的环丙烷化，已经观察到高达63%的对映体选择性。在3a和极化烯烃如呋喃或2，3-二氢-呋喃之间不形成1，3-环加合物。(C)2003爱思唯尔科技有限公司版权所有。
The phenyliodonium ylide 3a derived from Meldrum's acid reacts with olefins in the presence of Rh(II) carboxylate catalysts to afford cyclopropanes. The reaction is stereospecific. Enantioselectivities of up to 63% have been observed for the cyclopropanation of pent-l-ene. No 1,3-cycloadducts are formed between 3a and polarized olefins such as furan or 2,3-dihydro-furan. (C) 2003 Elsevier Science Ltd. All rights reserved.