Synthesis of photochromic 1,2-dihetarylethene using regioselective acylation of thienopyrroles.
[formula: see text] The influence of catalysts, acid chlorides, and solvents in the acylation of methyl 2-methyl-4H-thieno[3,2-b]pyrrole-5-carboxylate was studied. Conditions for the regioselective acylation processes were found. Thienopyrrole-based photochrome was synthesized for the first time.
Krayushkin
Michael M
MM
N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russian Federation. mray@mail.ioc.ac.ru
Yarovenko
Vladimir N
VN
Semenov
Stanislav L
SL
Zavarzin
Igor V
IV
Ignatenko
V
V
Martynkin
Andrey Yu
AY
Uzhinov
Boris M
BM