Abstract
A facile one step synthesis of dibenzo[3,4:7,8][1,5] diazocino[2,1-b:6,5-b′]diquinazolin-10,21-dione
(4a) and N-methyl/ethyldibenzo[3,4:7,8][1,5]diazocino[6,5-b]quinazolin-5,16-diones (4b,c) is described.
The mechanism involves a transannular reaction and the conformational
structure of 4b was confirmed by X-ray crystallographic
data.
Key words
diazocine - quinazolin-4(3H)-one - annelation - X-ray crystallographic analysis - microwave
reaction.
