α,α-Difluoro-α-phenylsulfanyl-α-trimethylsilylmethane as “CF2−” synthetic building block for the preparation of gem-difluoromethylenated cyclopentanols
摘要:
A general strategy for the preparation of gem-difluoromethylenated cyclopentanols has been demonstrated; it involves sequential fluoride-catalyzed nucleophilic addition of alpha,alpha-difluoro-alpha-phenylsulfanyl-alpha-trimethylsilylmethane (PhSCF2SiMe3; 1) to homoallyl ketones followed by intramolecular radical cyclization. (C) 2011 Elsevier B.V. All rights reserved.