Synthesis of benzoxazine and 1,3-oxazine derivatives via ligand-free copper(I)-catalyzed one-pot cascade addition/cyclization reaction
2012
Abstract A novel and efficient synthesis of benzoxazine and 1,3-oxazine derivatives via ligand-free copper(I)-catalyzed one-pot cascade addition/cyclization reaction has been developed. A variety of carbodiimides coupled with o -halophenylmethanols and/or substituted ( Z )-3-iodoprop-2-en-1-ols to give the corresponding products in moderate to excellent yields under the mild condition.
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