The synthesis of 3-(het)aryl-6,7-dihydro-5H-[1,2,4]-triazolo[3,4-a][2]benzazepines.

Autor: Glushkov, Vladimir А., Babentsev, Dmitry N., Dmitriev, Maksim V., Stepanova, Kseniya А., Kharintseva, Anastasiya Yu., Simakhina, Anastasiya E.
Předmět:
Zdroj: Chemistry of Heterocyclic Compounds; Jan2021, Vol. 57 Issue 1, p63-68, 6p
Abstrakt: 4-Aryl-2-methylbutan-2-ols with methoxy or methylenedioxy substituents participate in the Graf–Ritter reaction with methyl thiocyanate in the presence of an acid (H2SO4, MeSO3H) forming 1-methylsulfanyl-2-benzazepines in low yields (11–35%), which undergo cyclization with benzhydrazide or hetarenecarboxylic acid hydrazides upon reflux in o-dichlorobenzene into the corresponding 3-phenyl- and 3-hetaryl-6,7-dihydro-5H-1,2,4-triazolo[3,4-a][2]benzazepines (45–74% yields). [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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