Abstract A one-step synthesis of 3,3′-ethylene-bis(3,4-dihydro-6-substituted-2H-1,3-benzoxazines) (2a-e) from 1,3-bis(2′-hydroxy-5′-substituted-benzyl)imidazolidines (1a-e) and formaldehyde is reported.
Tópico:
Phenothiazines and Benzothiazines Synthesis and Activities
