1-methyl-1,4-dihydrochromeno[4,3-c]pyrazole-3-carboxylic acid 、
草酰氯 、
吡啶 、 、
二氯甲烷 在
(2H-benzo[b][1,4]oxazin-4(3H)-yl)(1-methyl-1,4-dihydrochromeno[4,3-c]pyrazol-3-yl)methanone 作用下,
以The title compound was obtained as a off-white solid with puritiy greater than 95% (42.7 mg, 0.12 mmol, 18.9% yield)的产率得到(2H-benzo[b][1,4]oxazin-4(3H)-yl)(1-methyl-1,4-dihydrochromeno[4,3-c]pyrazol-3-yl)methanone