Addition of methoxy(phenylthio)methyllithium to ketones, followed by rearrangement of the adducts, provides a new method for the preparation of α-(phenylthio)aldehydes. The rearrangement is stereospecific.
Ketones are converted into α-sulfenylated aldehydes with addition of one carbon atom via reaction with methoxyphenylthiomethyllithium followed by rearrangement of the adducts.
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.
Groot, Aede de; Jansen, Ben J. M., Synthesis, 1985, # 4, p. 434 - 436