3-(2-(N-t-butoxycarbonylamino)ethoxy)-4-carboxy-5-fluoro-1,2-benzisoxazole 、
diazomethane etherate 以
乙醚 为溶剂,
反应 0.25h,
以to give the title compound (0.32 g, 100% yield) as an oil的产率得到3-(2-(N-t-butoxycarbonylamino)ethoxy)-5-fluoro-4-methoxycarbonyl-1,2-benzisoxazole