1402597-09-4Relevant articles and documents
A convenient method for the preparation of mono- and bis-substituted photochromic bis(benzothienyl)perfluorocyclopentenes via regioselective Friedel-Crafts acylation
Bogacheva, A. M.,Charushin, V. N.,Yarovenko, V. N.,Struchkova, M. I.,Krayushkin, M. M.,Levchenko, K. S.,Shmelin, P. S.,Kobeleva, O. I.,Valova, T. M.,Barachevsky, V. A.
, p. 5948 - 5951,4 (2020/08/20)
The regioselective Friedel-Crafts acylation of 1,2-bis(2-methylbenzo[b] thien-3-yl)hexafluorocyclopentene was developed. Depending on the reaction conditions, mono- or bis(bromoacetyl) derivatives are formed as single products in good yields. Further heterocyclizations involving α-bromoketone moieties gave a series of new photochromic compounds.