Photochemische Reaktionen. 99. Mitteilung. Photochemistry of N??Acylimidazoles. IV. Structural Factors Leading to Norrish Type II Elimination and to Cyclobutanol …
Summary Conformational factors leading to Type I1 elimination and to cyclobutanol formation were studied in the irradiation of N-acylimidazoles with simple acyl groups as well as of their photochemical acyl migration products. ... Results and Discussion. Several N-acylimidazoles possessing hydrogen atoms at C(4') (y to the carbonyl group) were found to undergo efficient cleavage of acyl chain between C(2') and C(3') via a Norrish Type I1 process [2], and ...
