Synthesis of 1, 4-Benzodiazepine-2, 5-diones by Base Promoted Ring Expansion of 3-Aminoquinoline-2, 4-diones

F Křemen, M Gazvoda, S Kafka, K Proisl…

文献索引：Ruzicka et al. Helvetica Chimica Acta, 1943 , vol. 26, p. 1659,1664

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摘要

... With some exceptions,(25, 26) this procedure has been largely executed to give N1 unsubstituted products (R 1 = H). After ring ... the treatment of a selected 3-aminoquinoline-2,4(1H,3H)-dione with ethyl (triphenylphosphoranylidene)acetate (Ph 3 P═CHCO 2 Et) in xylene ...