作者:Shaw-Tao Lin、Chuan-Chen Lee、Mei-Fang Ding、David W. Liang、An-Ting Jeng
DOI:10.1002/jccs.201100375
日期:2012.4
A series of gem‐dibromocyclopropanes were treated with various metal complexes. Among the metal complexes, Ru(CO)2(PPh3)3, Ru(CO)3(PPh3)2, and Mo(CO)6 were able to remove a bromine atom from 1,1‐dibromo‐2‐phenylcyclopropanes (1) to yield a series of corresponding of 1‐bromo‐2‐phenylcyclopropanes (2). Upon the treatment of 1 with Cr(CO)6 in DMSO, a series of allenes were obtained in good yields. The
用各种金属络合物处理了一系列的宝石-二溴环丙烷。在金属络合物中,Ru(CO)2(PPh 3)3,Ru(CO)3(PPh 3)2和Mo(CO)6能够从1,1-二溴-2-苯基环丙烷中除去溴原子(1)产生一系列相应的1溴2苯基环丙烷(2)。用Cr(CO)6处理1在DMSO中,以良好的收率获得了一系列的烯。丙二烯的形成速率与苯上的取代基之间的相关性为负系数,这表明二溴环丙烷对Cr(CO)6具有亲电性。以Cr(CO)的存在6,宝石-dibromobicyclo [N,1,0]烷烃(4在DMF或DMSO中的溶液)进行碳-溴键的裂解,随后环膨胀和偶联以形成二环烯反应7。