Photoexcited arylketones catalyze the direct chlorination of C(sp3)–H groups by N- chlorosuccinimide. Acetophenone is the most effective catalyst for functionalization of unactivated C–H groups while benzophenone provides better yields for benzylic C–H functionalization. Activation of both acetophenone and benzophenone can be achieved by irradiation with a household compact fluorescent lamp. This light-dependent reaction provides a better control of the reaction as compared to the traditional chlorination methods that proceed through a free radical chain propagation mechanism.
Han, Lei,Xia, Ji-Bao,You, Lin,Chen, Chuo
p. 3696 - 3701
(2017/06/13)
Diphenylphosphinated Ethylene Oligomers as polymeric Reagents for Synthesis of Alkyl Chlorides from Alcohols
Diphenylphosphinated ethylene oligomers can be used as homogeneous polymeric reagents at 90 deg C in carbon tetrachloride to form alkyl chlorides from alcohols and since these funcionalized ethylene oligomers precipitate quantitatively from solution at 25 deg C, they can be easily recovered and separated from the reaction products and can be partially recycled.
Bergbreiter, David E.,Blanton, James R.
p. 337 - 338
(2007/10/02)
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