[(1R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl] (1R,2S)-2-methyl-4,6-dioxocyclohexane-1-carboxylate 、
2-[1,3]Dioxan-2-yl-6-methoxymethoxy-benzonitrile N-oxide 在
4 A molecular sieve 作用下,
以
异丙醇 为溶剂,
反应 24.0h,
以72%的产率得到[(1R,2S,5R)-5-methyl-2-propan-2-ylcyclohexyl] (5R,6S)-3-[2-(1,3-dioxan-2-yl)-6-(methoxymethoxy)phenyl]-6-methyl-4-oxo-6,7-dihydro-5H-1,2-benzoxazole-5-carboxylate