57942-17-3Relevant articles and documents
Thermal ring contraction of 3H-1,4-benzo- diazepines into quinazolines
Kaname, Mamoru,Tsuchiya, Takashi,Sashida, Haruki
, p. 2407 - 2413 (2007/10/03)
The thermolysis of the 5-methoxy-(11a-c) and 5-diethylamino-3H-1,4- benzodiazepines (14a-c) resulted in a ring transformation to give the 4- methoxy-(12a-c) and 4-diethylaminoquinazolines (15a-c), respectively. The mechanism of this ring contraction is also described.