Abstract
3-(Functionalized-methyl)- and 3-alkenylareno(hetareno)[
b
]thiophenes
13-16
are prepared
via
the side chain elaboration of 3-(benzotriazol-1-ylmethyl)thiophenes
10d-f,h
, readily available from the condensation of 1-benzotriazolyl-3-chloroacetone
7
with aromatic or heteroaromatic thiols followed by dehydrative cyclization of 1-(benzotriazol-1-yl)-3-[aryl(hetaryl)thio]acetones
9d-f,h
.