methyl 2-(6-hydroxy-2-methyl-3-oxo-3,6-dihydro-2H-pyran-2-yl)acetate 、
碘甲烷 在
silver(l) oxide 作用下,
反应 12.0h,
生成 methyl 2-((2SR,6SR)-6-methoxy-2-methyl-3-oxo-3,6-dihydro-2H-pyran-2-yl)acetate 、 methyl 2-((2SR,6RS)-6-methoxy-2-methyl-3-oxo-3,6-dihydro-2H-pyran-2-yl)acetate