Sashida, Haruki Reactions of 2-benzoselenopyrylium salts with hydrazine: a new easy access to 5H-2,3-benzodiazepines. [electronic resource] - Chemical & pharmaceutical bulletin Jan 2005 - 60-3 p. digital Publication Type: Journal Article ISSN: 0009-2363 Standard No.: 10.1248/cpb.53.60 doi Subjects--Topical Terms: Benzodiazepines--chemistryHydrazines--chemistrySelenium Compounds--chemistry