Acid-Induced Rearrangement Reactions of α-Hydroxy-1,3-dithianes
作者:Karsten Krohn、Stephan Cludius-Brandt
DOI:10.1055/s-0029-1218658
日期:2010.4
Secondary benzylic or aliphatic α-hydroxydithianes 1a-c rearrange to α-thioketones when treated with acid. Related tertiary alcohols 1d-g eliminate to dithioketene ketals (e.g., 2d), which are ring-opened to thiols in some cases (1e, 1f). Allylic α-hydroxydithianes 1h and 1i form the thioesters 2h and 2i (homologation), and the tertiary alcohols 1j and 1k undergo deoxygenation to 2j and 2k. 1,3-dithianes