2-氯-3-硝基吡啶 、
4-hydroxyphenoxyethyl tetrahydro-2H-pyran-2-yl ether 在
2-[4-(2-tetrahydropyranyloxy-ethoxy)-phenoxy]-3-nitro-pyridine 作用下,
以The desired product 7a was obtained in 76% yield的产率得到2-[4-(2-tetrahydropyranyloxy-ethoxy)-phenoxy]-3-nitro-pyridine