Experimental and Theoretical Studies on the Conjugation of the Phosphorus−Carbon Double Bond with a Cyclopropyl Group
作者:Shigeo Kimura、Shigekazu Ito、Masaaki Yoshifuji、Tamás Veszprémi
DOI:10.1021/jo034648g
日期:2003.8.1
X-ray structural analysis for (Z)-2-cyclopropyl-1-(2,4,6-tri-tert-butylphenyl)-1-phosphaethene (2) was performed to confirm that the cyclopropyl group largely interacts with the P=C group compared with its carbon analogue, vinylcyclopropane (1). Absorption spectrum and redox properties of 2 were also studied to prove the conjugation. Theoretical investigation for nonsubstituted derivatives (4) indicated conjugative interaction between the P=C and cyclopropyl groups and revealed the physicochemical similarities between the P=C and C=C bonds.