(α-ethoxycarbonyl-α-4-nitrobenzoylmethylene)triphenylphosphorane

(E)-ethyl 3-(4-nitrophenyl)-2-bromo-2-propenoate

对硝基苯甲醛

(2-ethoxy-1-iodo-2-oxoethyl)-triphenylphosphanium,iodide

ethyl 2,3-dibromo-3-(4-nitrophenyl)propanoate