Abstract
Photolysis of 5,5'-dimethyl-2,2'-dinitrodiphenylmethanes(1)in
propan-2-ol yielded 2,9-dimethyl-11 H-dibenzo[c,f][1,2]diazepin-11-one 5-oxides(2) as the major product.
5-Methyl-3-(5'-methyl-2'- nitrophenyl)-2,1-benzisoxazoles
(3), 2,9-dimethyldibenzo[c,f][1,2]diazepin-11-ones (4),2,2'-dinitro-tenzophenones (5), acridinones (6), N-hydroxyacridinones
(7), dibenzo[c,f][1,2]diazepin-11-one
5,6-dioxide (8)and 2,2'-dinitrosobenzophenone(9)were also formed in varying amounts.
Irradiation of (1) in
acidic ethanol afforded benzisoxazoles (3) as the
major product. In benzene medium, the major photoproduct of (1) was
2,2'-dinitrobenzophenones (5). Irradiation of (1) in triethylamine afforded dibenzo[c,f][1,2]diazepines (12) also in
addition to the other products. A plausible mechanism to account for the
formation of various products in these photoreactions is discussed.
Cited by
11 articles.
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