反应详情

The procedure of Step 2 of Example 1 was repeated except for using (E)-3-(3,5-difluorophenyl)-1-(3-hydroxyphenyl)prop-2-en-1-one obtained in Step 1 as a starting material instead of (E)-1-(3-hydroxyphenyl)-3-phenylprop-2-en-1-one and being stirred for 5 d to obtain the title compound (99%).