151582-19-3Relevant articles and documents
2-Perfluoroalkanoylcyclopentane-1,3-diones. Synthesis and some transformations
Khlebnikova,Piven', Yu. A.,Isakova,Lakhvich
, p. 1277 - 1282 (2013/02/21)
2-Perfluoroalkanoylcyclopentane-1,3-diones were synthesized for the first time by acylation of cyclopentane-1,3-dione with perfluorocarboxylic acids in the presence of 1,1′-carbonyldiimidazole or with perfluorocarboxylic anhydrides in the presence of imidazole. 2-Perfluoroalkanoylcyclopentane-1,3- diones were selectively reduced to 2-(1-hydroxyperfluoroalkyl)cyclopentane-1,3- diones by the action of triethylsilane in trifluoroacetic acid in the presence of a catalytic amount of lithium perchlorate. Treatment of the title compounds with oxalyl chloride and subsequent reaction with 2 equiv of primary amine (4-fluoroaniline, 4-fluorobenzylamine, 3,4-difluoroaniline, 3- trifluoromethylbenzylamine) gave the corresponding 3-arylamino-2- perfluoroalkanoylcyclopent-2-en-1-ones. Pleiades Publishing, Ltd., 2012.