METHOD FOR PURIFYING ALKENYL COMPOUND BY DISTILLATION

摘要

PROBLEM TO BE SOLVED: To provide a method for giving a purified alkenyl compound having a very low color number, without having defects described in detailed description of this invention and without incurring a high cost. SOLUTION: When an alkenyl compound having a divalent or trivalent heteroatom atα-position based on the double bond is purified, distillation is carried out at least two times and the purified compound is obtained from a vapor phase by condensation. The time between the first distillation after the synthesis of the alkenyl compound and at least one further distillation is at least one day, and the purified alkenyl compound has an APHA color number of <30.