Synthesis of photochromic spirooxazines from 1-amino-2-naphthols
摘要:
A synthetic access to photochromic spirooxazines is developed through the condensation of methylene-substituted azaheterocycles on 1-amino-2-naphthols in presence of an oxidizing agent. Compared to usual preparation of this kind of compounds (via 1-nitroso-2-naphthols), yields are generally good and approaches to Further spiroheterocyclic oxazines are possible. (C) 1997 Elsevier Science Ltd.
A synthetic access to photochromic spirooxazines is developed through the condensation of methylene-substituted azaheterocycles on 1-amino-2-naphthols in presence of an oxidizing agent. Compared to usual preparation of this kind of compounds (via 1-nitroso-2-naphthols), yields are generally good and approaches to Further spiroheterocyclic oxazines are possible. (C) 1997 Elsevier Science Ltd.