Observations regarding the first step of the Julia-Lythgoe olefin synthesis
作者:David J. Hart、Wen-Lian Wu
DOI:10.1016/0040-4039(96)01092-1
日期:1996.7
Using DME as a solvent in the addition of metallated sulfones to aldehydes can increase yields in the firststep of the Julia-Lythgoeolefinsynthesis. The addition of metallated sulfones to ketones is also discussed.
Intramolecular acylation of an α-sulfonyl anion generated via halogen-metal exchange of an α-halosulfone bearing an unsymmetrical anhydride
作者:M.B. Anderson、M. Lamothe、P.L. Fuchs
DOI:10.1016/0040-4039(91)80011-t
日期:1991.1
α-Halosulfones are useful for the preparation of α-sulfonyl anions in the presence of acylating agents bearing enolizable protons. Inter- and intramolecular acylations can be effected by halogen-metal exchange at low temperature.