Electrophilic fluorocyclization of unsaturated alcohols in ionic liquids
摘要:
Fluorocyclization of phenyl-substituted alkenols in ionic liquids under action of N-F reagents namely F-TEDA-BF4 and N-fluorobenzenesulfonimide has been studied. Opposite to the non-stereoselective reaction in organic solvents the reaction in ionic liquids resulted in the formation preferably of the trans-diastereomeric fluorinated cyclic ethers. 2-Difluoromethyl-2-phenyl-tetrahydrofuran was obtained by interaction of 4-phenylpent-4-en-1-ol with F-TEDA-BF4 in ionic liquids. (c) 2012 Elsevier Ltd. All rights reserved.