反应详情

starting from 2-(2,4-dichlorophenyl)-1-(3-pyridyl)-4-pentyn-1-one and chloromethyltriphenylphosphonium chloride there is obtained 3-[α-chloromethylene-2,4-dichloro-β-(2-propynyl)-phenethyl]-pyridine as an isomer-pure compound in the form of white crystals, m.p. 87-88° C.;