Efficient synthesis of 2,3-dihydro-1,4-benzoxazines via intramolecular copper-catalyzed O-arylation
摘要:
A highly efficient synthetic approach to 2,3-dihydro-1,4-benzoxazines is described. The method involves a mild intramolecular copper-catalyzed O-arylation of beta aminoalcohol, which works well without N-protection. (C) 2009 Elsevier Ltd. All rights reserved.