Fluorinative ring-expansion of cyclic ethers using p-iodotoluene difluoride.: Stereoselective synthesis of fluoro cyclic ethers

Fluorinated five- to seven-membered cyclic ethers were stereoselectively synthesized from four- to six-membered cyclic ethers having an iodoalkyl substituent by fluorinative ring-expansion reaction using p-iodotoluene difluoride. (C) 2003 Elsevier Science Ltd. All rights reserved.