Allylation of Carbonyl Compounds Mediated by Nanometer-Sized Bismuth in Water
作者:Qian Miao、Zhiyong Wang、Xiaolan Xu、Zhenggen Zha
DOI:10.1055/s-2004-822924
日期:——
It is found that nanometer-sized bismuth mediates the allylation of carbonylcompounds in water to afford the corresponding homoallylic alcohol in high yields. Nanometer-sized bismuth is much more effective than regular bismuth powder in this reaction.
corresponding homoallylic alcohols in good yields. Also, the chemoselectivity was studied under the same condition. It was found that good chemoselectivity of allylations could be obtained for different carbonylcompounds under the mediation of our bimetal systems.
Barbier-type reaction mediated with tin nano-particles in water
作者:Zhenggen Zha、Shu Qiao、Jiaoyang Jiang、Yusong Wang、Qian Miao、Zhiyong Wang
DOI:10.1016/j.tet.2004.12.063
日期:2005.2
Tin nano-particles are employed in the Barbier-type allylation reaction of carbonyl compounds in water to afford the corresponding homoallylic alcohols in good yields. The in situ generated allylation intermediates, allyltin(II) bromide and diallyltin dibromide, have been directly observed by using 1H NMR. A mechanism is proposed based on this observation.
锡纳米颗粒用于羰基化合物在水中的Barbier型烯丙基化反应,以高收率得到相应的均烯丙基醇。使用1 H NMR可以直接观察到原位生成的烯丙基化中间体溴化烯丙基锡(II)和二烯丙基二烯丙基二溴化物。基于这种观察结果提出了一种机制。
Novel carbonyl allylation mediated by SnCl2/Cu in water
作者:Xiang-Hui Tan、Bo Shen、Lei Liu、Qing-Xiang Guo
DOI:10.1016/s0040-4039(02)02370-5
日期:2002.12
Copper metal was found to be able to catalyze SnCl2-mediated coupling between carbonyl compounds and allyl halides to give the corresponding homoallylic alcohols in high yields. (C) 2002 Elsevier Science Ltd. All rights reserved.
Takahara, Jun P.; Masuyama, Yoshiro; Kurusu, Yasuhiko, Chemistry Letters, 1991, # 5, p. 879 - 882
作者:Takahara, Jun P.、Masuyama, Yoshiro、Kurusu, Yasuhiko