ethyl 7-(4-(6-bromopyridin-2-ylcarbamoyl)phenoxy)-6-chlorochroman-4-carboxylate 、 bromozinc(1+),2-methylpropane 在
(1E,4E)-1,5-diphenylpenta-1,4-dien-3-one;palladium ethyl acetate hexanes 作用下,
反应 1.0h,
以to yield the desired compound (8 mg, 0.016 mmol, 56% yield)的产率得到ethyl 7-(4-(6-tert-butylpyridin-2-ylcarbamoyl)phenoxy)-6-chlorochroman-4-carboxylate