Solvent-Free Methallylboration of Ketones Accelerated by <i>tert</i>-Alcohols
作者:Yongda Zhang、Ning Li、Navneet Goyal、Guisheng Li、Heewon Lee、Bruce Z. Lu、Chris H. Senanayake
DOI:10.1021/jo4006574
日期:2013.6.7
A solvent- and metal-free process has been developed for the direct methallylboration of ketones employing the stable B-methallylborinane 1, which was accelerated by tertiary alcohols. In the presence of 2.0 equiv of readily available tertiary alcohols such as tert-amyl alcohol, the methallylation products were prepared at room temperature in excellent yields. The salient features of the described process include simple operation, high efficiency, and mild reaction conditions.
IMAMOTO, TSUNEO;KUSUMOTO, TETSUO;TAWARAYAMA, YOSHINORI;SUGIURA, YASUSHI;M+, J. ORG. CHEM., 1984, 49, N 21, 3904-3912
SmCl3-catalyzed electrochemical reductive allylation of ketones
作者:Hassan Hebri、Elisabet Duñach、Jacques Périchon
DOI:10.1016/s0040-4039(00)60322-2
日期:1993.2
A series of homoallylic alcohols was prepared in moderate to good yields from allyl chlorides and ketones, through an electrochemical method using SmCl3 as the catalyst precursor. The electrosyntheses were carried out in undivided cells fitted with a consumable magnesium anode.