作者:Thomas Müller、Catherine Dostert、Daniel Czajkowski
DOI:10.1055/s-0033-1340307
日期:——
The regioselective lithiation of dithienothiazines followed by electrophilic trapping in a one-pot fashion is an efficient route to 2-mono- and 2,6-difunctionalized dithienothiazines. A pseudo five-component dilithiation-diformylation-double-Wittig olefination sequence gives a dithienothiazine symmetrically functionalized with ,-unsaturated ester side chains in excellent yield.