90140-60-6Relevant articles and documents
Heterocyclic Compounds, VI. Formation of Isomers upon Acylation of Compounds Having a 1-Aryl-4-methyl-5H-2,3-benzodiazepine Skeleton
Koeroesi, Jenoe,Lang, Tibor,Sohar, Pal,Neszmelyi, Andras,Horvath, Gyula,Zolyomi, Gabor
, p. 1476 - 1486 (2007/10/02)
Acetylation of 1-(3,4-dimethoxyphenyl)-5-ethyl-7,8-dimethoxy-4-methyl-5H-2,3-benzodiazepine (1) in hot acetic anhydride yields the isomers 2a and 3a in equal proportions.Acetylation of 1 in the presence of pyridine led exclusively to 2a, that of 1 * HCl (