A disulfone compound represented by the general formula (3):
1
wherein Ar is optionally substituted aryl, Y is hydrogen or oxo, and each wavy line represents either of E/Z geometrical isomers or a mixture thereof; a process for the preparation of the compound; intermediates thereof; and a process for the preparation of a carotenoid represented by the general formula (4):
2
wherein Y and each wavy line are as defined above, comprising reacting a disulfone compound of the general formula (3) with a basic compound.
SULFONE COMPOUND AND METHOD FOR PRODUCING THE SAME
申请人:Sumitomo Chemical Company, Limited
公开号:EP2261204A1
公开(公告)日:2010-12-15
The present invention relates to a process for producing a sulfone compound represented by formula (1), which comprising a step of obtaining a compound represented by formula (4) by reacting a compound represented by formula (3) with a chlorate or a bromate, and then resulting reaction solution with HX or X2; a step of obtaining a compound represented by formula (5) or formula (6) by reacting a compound represented by formula (4) with a halogenating agent or M(OCOR)n; or a step of obtaining a compound represented by formula (7) by reacting a compound represented by formula (5) or formula (6) with an inorganic base.