Thiosulfonic<i>S</i>-Esters; 6. Fluoride-Mediated α-Phenylsulfenylation of Cyclic Ketones and Esters via their Trimethylsilyl Enol Ethers
作者:Romualdo Caputo、Carla Ferreri、Giovanni Palumbo
DOI:10.1055/s-1989-27292
日期:——
Ketones and carboxylic acid esters are conveniently converted to their α-sulfenylated derivatives. This new procedure is likely to represent the first reliable one for regiospecific monosulfenylation of carbonyl compounds. It is based on the reaction of their trimethylsilyl enol ether derivatives with tetrabutylammonium fluoride in the presence of thiosulfonic S-esters, in anhydrous tetrahydrofuran, under mild conditions, at - 70°C for a few minutes.
New synthetic reactions. Sulfenylations and dehydrosulfenylations of esters and ketones
作者:Barry M. Trost、Thomas N. Salzmann、Kunio Hiroi
DOI:10.1021/ja00432a034
日期:1976.8
New synthetic methods. 1,2-(Alkylative) carbonyl transpositions
作者:Barry M. Trost、Kunio Hiroi、Seizi Kurozumi
DOI:10.1021/ja00835a045
日期:1975.1
Do the Electronic Effects of Sulfur Indeed Control the π-Selectivity of γ-Sulfenyl Enones? An Investigation
作者:Veejendra K. Yadav、K. Ganesh Babu、Masood Parvez
DOI:10.1021/jo034608c
日期:2004.5.1
The electronic effects of sulfur in gamma-sulfenyl enones are not transmitted to the carbonyl carbon through the pi bond as reported previously. The diastereoselectivity is rather controlled by a combination of several other factors. The steric effects arising from the substituents on the sulfur atom and the gamma-carbon and the bulk of the nucleophile constitute the major control elements.