Chemoselective Protection of Aldehydes as Dithioacetals in Lithium Perchlorate-Diethyl Ether Medium. Evidence for the Formation of Oxocarbenium Ion Intermediate from Acetals.
作者:V. Geetha Saraswathy、S. Sankararaman
DOI:10.1021/jo00095a049
日期:1994.8
A novel synthesis of half-protected 1,3-dicarbonyl compounds
Preparation of 1,3-Dithiolan-2-ylium Tetrafluoroborate and Its Reaction with Enol Trimethylsilyl Ethers
作者:V. Prakash Reddy、Donald R. Bellew、G. K. Surya Prakash
DOI:10.1055/s-1992-26336
日期:——
1,3-Dithiolan-2-ylium tetrafluoroborate (2) has been prepared and is found to be a good C-alkylating agent for the ß-1,3-dithiolaniation of carbonyl compounds through their enol trimethylsilyl ethers.