Stereoselective Photodimerization of (<i>E</i>)-Stilbenes in Crystalline γ-Cyclodextrin Inclusion Complexes
作者:K. S. S. P. Rao、S. M. Hubig、J. N. Moorthy、J. K. Kochi
DOI:10.1021/jo9903149
日期:1999.10.1
Solid-state irradiation of the crystallineinclusioncomplex of (E)-stilbene in gamma-cyclodextrin (gamma-CD) yields a single isomer of syn-tetraphenylcyclobutane stereoselectively in high yield. In contrast, the photodimerization of stilbene in solution is very inefficient and unselective, and no photodimer is observed even upon prolonged irradiation of pure crystals. The monosubstituted stilbenes