ethyl 3-(3,4-dihydro-7-hydroxy-2-methyl-4-oxo-8-propyl-2H-1-benzopyran-2-yl)propanoate 、
硼烷 、
trifluoroborane diethyl ether 以
四氢呋喃 为溶剂,
以There was obtained 195 mg of racemic-3,4-dihydro-7-hydroxy-2-methyl-8-n-propyl-2H-1-benzopyran-2-propanoic acid ethyl ester as a pale yellow oil的产率得到racemic-3,4-dihydro-7-hydroxy-2-methyl-8-n-propyl-2H-1-benzopyran-2-propanoic acid ethyl ester