1‐disubstituted alkenes via radicaladdition‐anionic cyclization cascade has been successfully developed. Another new protocol based on photocatalytic allylation and cyclopropanation cascade was also described between allylic halide and halomethyl radical. In addition to the successful use of bis‐catecholato silicates as the alkylradical precursors, the acyl and alkylradicals derived from 1,4‐dihydropyridines
Siloxacycles are synthesized in high yield and purity by reaction of acyloxymethyl (alkoxy) silanes in the presence of a catalyst which is a metal from groups 3 to 15 of the periodic table, or a compound thereof.
Silanes containing an ester group are produced in high yield and purity by reacting a salt of a carboxylic acid with a silane containing a carboxylate substitutable leaving group following by distilling the product mixture to obtain a distillate containing the ester group containing silane product, wherein a solvent having a boiling point higher than the product is contained in the product mixture during at least a terminal portion of the distillation.
The Fluoride-Free Transmetalation of Organosilanes to Gold
作者:Stéphanie Dupuy、Alexandra M. Z. Slawin、Steven P. Nolan
DOI:10.1002/chem.201202299
日期:2012.11.19
Golden transfer: The versatile gold(I) complex [Au(IPr)(OH)] permits very straightforward access to a series of aryl‐, vinyl‐ and alkylgold silanolates by reaction with the appropriate silane reagent. These silanolate compounds are key intermediates in a fluoride‐free process that results in the net transmetalation of organosilanes to gold.
Silanes containing an ester group are produced in high yield and purity by reacting a salt of a carboxylic acid with a silane containing a carboxylate substitutable leaving group following by distilling the product mixture to obtain a distillate containing the ester group containing silane product, wherein a solvent having a boiling point higher than the product is contained in the product mixture during at least a terminal portion of the distillation.