The First Mineral-Catalyzed
One-Pot [3+1+2] Coupling Protocol
for Multifunctionalized Fused-Ring Pyrimidines
作者:Lal Yadav、Ankita Rai
DOI:10.1055/s-0029-1216874
日期:——
This is the first report on montmorillonite K-10 clay (nanoclay)-catalyzed, domino reactions of unprotected d-glucose/d-xylose with amidines/guanidine and an activated natural amino acid 2-phenyl-1,3-oxazol-5-one. The procedure results in an efficient annulation of the iminosugar moiety with functionalized pyrimidines in excellent yields (79-92%) with high trans-diastereoselectivity (>94%). The reaction