Described herein is an iodide-promoted insertion reaction of vinyltrimethylsilane into diaryl or dialkyl disulfides in the presence of iodine/KF leading to the production of a 1,1′-adduct, a dithioacetal derivative. This method also accomplishes insertion into a diaryldiselenide to afford the corresponding diselenoacetal derivative.
A process for the synthesis of ethanol and acetaldehyde using cobalt compounds with novel promoters
申请人:TEXACO DEVELOPMENT CORPORATION
公开号:EP0175797A1
公开(公告)日:1986-04-02
57 Ethanol and or acetaldehyde are prepared in good yield by contacting methanol, hydrogen and carbon monoxide with a catalyst system comprising a cobalt-containing compound and a promotor in the presence of an inert oxygenated solvent at a temperature of from about 50°C to about 350°C and a pressure of at least 35 bar or greater. The combination of cobalt-containing compound and promoter may be a) a cobalt-containing compound with an organo-sulphur compound, b) an iodide-containing cobalt compound with a nitrogen-containing compound as promoter, and c) a cobalt-containing compound with 1,1'- bis(diphenylphosphino)ferrocene.