作者:Yoshihiro Okuda、M. V. Lakshmikantham、Michael P. Cava
DOI:10.1021/jo00021a012
日期:1991.10
A facile synthesis of 1,3-dichlorobenzo[c]thiophene 3 is described. Lithium-chlorine exchange of 3, followed by reaction with various electrophiles, provides a route to 1-acyl-3-chlorobenzo[c]thiophenes, as well as to the very stable 1,3-bis(tert-butyldimethylsilyl)benzo[c]thiophene (9). Compound 9 undergoes silyl replacement reactions with acylating agents, as well as an unusual oxidative desilylation by I2 or TiCl4, to give the capped disilylated dimer, trimer, and tetramer (16, 17, and 18) of benzo[c]thiophene.