Photochromic Behaviour of 2,3-Substituted Norbornadiehes
摘要:
A series of novel 2,3-substituted norbornadienes has been prepared, Under UV- and Vis-irradiation in isopropanol and acetonitrile compounds undergo (2+2) valence isomerization into the corresponding quadricyclanes, the back interconversion being catalysed by CF3COOH or MoO3.