Process for the production of sulfonic esters

Details Process for the production of sulfonic esters Process for the production of sulfonic esters

2006-01-31

2006-01-31

Shameem, Golam M. M. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Sulfonate esters

C558S044000

Reexamination Certificate

active

06992205

ABSTRACT:
Sulfonic acid ester derivatives represented by the general formula (4) or (5) are produced by reacting an amino alcohol derivative represented by the general formula (1) or (2) with an organic sulfonyl halide represented by the general formula (3), in a mixed solvent composed of an aprotic organic solvent and water in the presence of a non-water-prohibiting inorganic base. This procedure can be carried out in a simple, easy, safe and economical manner while reducing the load on the environment.Wherein n represents an integer of 0 to 5, A represents a phenyl group, which may be substituted, R represents a methanesulfonyl, ethanesulfonyl, p-toluenesulfonyl or p-nitrobenzenesulfonyl group and X represents a chloride, bromine or iodine atom.

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Yamada Koichiro, et al., Production of optically active 1-substituted-2-aminopropane, Oct. 21, 1987, JP 62-240651, Marked-up English abstract indicating mistakes identified by Applicants of subject application.
Kutsuki Hidetoshi, et al., Production of optically active 1-Benzyl-3-hydroxypyrrolidine, Jun. 6, 1989, JP01-143852, Marked-up English abstract indicating mistakes identified by Applicants of subject application.

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