The present invention relates to a process for producing a sulfone compound of the following formula (3), characterized in that an allyl sulfone compound of the formula (1) and an allyl halide compound of the formula (2) are reacted in an organic solvent in the presence of an alkali metal hydroxide and a phase-transfer catalyst:
wherein A is CH2 or C=O; Ar is an aryl group optionally having 1 to 3 substitutents; and the wavy line means that the steric relation to the double bond which the wavy line is bound to is of E-form, Z-form or a mixture of E/Z;
wherein X is a halogen atom; and the wavy line means the same as defined above; and
wherein A, Ar and the wavy line mean the same as defined above.
The present invention also relates to a process for producing a carotenoid from the same sulfone compound.
本发明涉及一种生产以下式(3)的砜化合物的方法,其特征在于,在有机溶剂中,在碱
金属氢氧化物和相转移催化剂的存在下,反应式(1)的烯丙基砜化合物和反应式(2)的烯丙基卤化物化合物:其中A是
CH2或C=O; Ar是一个芳基团,可选地具有1至3个取代基; 波浪线表示与波浪线所绑定的双键的立体关系为E形式、Z形式或E/Z的混合物;其中X是卤素原子; 波浪线的含义与上述定义相同; 其中A、Ar和波浪线的含义与上述定义相同。本发明还涉及从该砜化合物生产类
胡萝卜素的方法。