Process for producing retinol and intermediate compounds for producing the same
AssigneeSumitomo Chemical Company, Limited
InventorsToshiya Takahashi, Shinzo Seko, Kazutaka Kimura, Noriyuki Doi, Naoto Konya
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Abstract
There are disclosed a disulfone compound of formula (1): wherein Ar denotes an aryl group that may have a substituent, R1 denotes a hydrogen atom or a protective group of a hydroxyl group and the wavy line means that the disulfone compound is an E or Z geometrical isomer or a mixture thereof, a method for producing the same, intermediate compounds therefore and a process for producing retinol through the disulfone compound.
Claims4
A sulfone compound of formula (4):
- wherein Ar denotes a substituted or unsubstituted aryl group, R denotes a hydrogen atom or a protective group of a hydroxyl group, and the wavy line means that the sulfone compound is an E or Z geometrical isomer or a mixture thereof.
A sulfone compound of formula (4):
- wherein Ar denotes a substituted or unsubstituted aryl group, R denotes a protective group of a hydroxyl group, and the wavy line means that the sulfone compound is an E or Z geometrical isomer or a mixture thereof.
A sulfone compound of formula:
- wherein Ar denotes a substituted or unsubstituted aryl group, and R1 denotes a hydrogen atom.
A sulfone compound of formula:
- wherein Ts denotes a p-toluenesulfonyl group and R1 denotes a hydrogen atom.
Dependencies are inferred from the claim text.