作者:W.H. Laarhoven、T.H.J.H.M. Cuppen、R.J.F. Nivard
DOI:10.1016/s0040-4020(01)93139-4
日期:1970.1
Photodehydrocyclizations in stilbene-like compounds take place only if the sum of the free valence numbers of the atoms concerned in the cyclization step exceeds in the excited state, a value of 1. If more than one cyclization is possible the photoconversion follows the pathway for which ΣF* is maximal; if ΔΣF* for various cyclizations is smaller than 0·1 a second product is sometimes formed.
仅当在环化步骤中有关原子的自由价数之和在激发态下超过值1时,才会发生1,2-苯乙烯化合物的光脱氢环化。 ΣF*最大;如果用于各种环化的Δ∑F *小于0·1,则有时形成第二乘积。