Kinetic Studies of the Cyclization of Singlet Vinylchlorocarbenes
作者:Robert A. Moss、Jingzhi Tian、Ronald R. Sauers、Robert S. Sheridan、Avinash Bhakta、Peter S. Zuev
DOI:10.1021/ol051743y
日期:2005.10.1
[reaction: see text] Vinylchlorocarbenes (R = Me or Cl) cyclize to cyclopropenes with k = (2.4-5.1) x 10(7) s(-1) or (3.1-4.5) x 10(6) s(-1), respectively, in solution at room temperature. The corresponding E(a) values are 6.6 and 5.7 kcal/mol. Excited diazirines are also likely precursors of the cyclopropenes.