Synthesis of optically active 1-fluoroalkyl benzenes
作者:Elke Fritz-Langhals
DOI:10.1016/s0040-4039(00)73178-9
日期:1994.3
A simple synthesis of opticallyactive 1-fluoroalkyl benzenes bearing electron withdrawing substituents is developed. Opticallyactive 1-hydroxyalkyl benzenes are converted into the methanesulfonates and subsequently converted into the opticallyactive 1-fluoroalkyl benzenes 1 by use of the fluorinating agent cesium fluoride/N-methyl-formamide.
Alkali metal fluorides as efficient fluorinating agents. Enantiocontroued synthesis of 2-fluoroalkyl carboxylates and 1-fluoroalkyl benzenes
作者:Eike Fritz-Langhals
DOI:10.1016/0957-4166(94)80048-0
日期:1994.6
Potassium fluoride and cesium fluoride m formamide, N-methylformamide, or acetamide are efficient fluorinatingagents. They can be used for the enantiocontrolled synthesis of 2-fluorocarboxylic acids 1a and 1-fluoroalkyl benzenes 1b from the corresponding sulfonates which are easily available in high enantiomeric purity. The scope and limitation of the synthetic method is discussed.