Factors affecting the selection of products from a photochemically generated singlet biradical
作者:David A. Broyles、Barry K. Carpenter
DOI:10.1039/b501422k
日期:——
The chemistries of a monoradical of the ultrafast "radical-clock" type and a structurally related singlet biradical, generated by Norrish typeII photochemistry, are compared. The monoradical is found to undergo the characteristic ring-opening reaction of its class at about 10(10) s(-1) at room temperature. However, the singlet biradical shows no evidence of the analogous ring-opening reaction. The contrasting