- 作者: 吳裕文、黃淑惠、曾永富、楊志馮
- 作者服務機構: Chemical Engineering Department, I-Shou University, Ta-Hsu, Kaohsiung, Taiwan 84008, R.O.C.
- 中文摘要: The reactions of free radical addition to allylic compounds are believed to proceed the SH2¢ mechanism. It is not clear whether the SH2¢ mechanism is concerted or stepwise. The leaving group effects and the secondary a-deuterium kinetic isotope effects in free radical SH2¢ reactions have been determined. The leaving group effect, kBr/kCl, is from 1.88 to 14.3. The secondary a-deuterium kinetic isotope effects, kH/kD, are 1.20 for 2-methylallyl chloride and 1,1-d2-2-methylallyl chloride and 1.22 for allyl chloride and 1,1-d2-allyl chloride. The free radical SH2¢ reactions seem to favor the concerted mechanism.
- 英文摘要: --
- 中文關鍵字: Solvent effect; Free radical SH2' reaction; Isotope effects; tert-Butyl radical addition; Concerted mechanism; Stepwise mechanism.
- 英文關鍵字: --