Calculations Predict That Heavy-Atom Tunneling Dominates Mobius Bond Shifting in [12]- and [16]Annulene

被引:6
|
作者
Arbitman, Jessica K. [1 ]
Michel, Cameron S. [1 ]
Castro, Claire [1 ]
Karney, William L. [1 ]
机构
[1] Univ San Francisco, Dept Chem, 2130 Fulton St, San Francisco, CA 94117 USA
基金
美国国家科学基金会;
关键词
REARRANGEMENT; CYCLIZATION;
D O I
10.1021/acs.orglett.9b03185
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The contribution of heavy-atom tunneling to reactions of [12]- and [16]annulene was probed using small-curvature tunneling rate calculations. At the CCSD(T)/cc-pVDZ//M06-2X/cc-pVDZ level, tunneling is predicted to account for more than 50% of the rate for Mobius bond shifting and ca. 35% of the rate for electrocyclization in [12]annulene, and over 80% of the rate for Mobius bond shifting in [16]annulene, at temperatures at which these reactions have been observed experimentally.
引用
收藏
页码:8587 / 8591
页数:5
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