Method for making alkanesulphonyl chlorides

Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfur halides

Reexamination Certificate

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C562S821000, C562S827000, C562S828000

Reexamination Certificate

active

06852883

ABSTRACT:
In the process according to the invention for the manufacture of an alkanesulphonyl chloride RCH2—SO2Cl by oxidative chlorolysis of the corresponding mercaptan RCH2—SH, the mercaptan and water are introduced into the reaction mixture in the form of a dispersion of water in the mercaptan.This makes it possible to obtain both an alkanesulphonyl chloride of very good quality and a hydrochloric acid of commercial grade.

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CA:135:212601 abs of JP2001247537 Sep. 11, 2001.*
CA:140:6407 abs of JP2003342252 Dec. 2003.*
Bradley D. Christie, et al., “Synthesis of Optically Pure Pipecolates from L-Asparagine. Application to the Total Synthesis of (+)- Apovincamine through Amino Acid Decarbonylation and Iminium Ion Cyclization”, J. Org. Chem. 1985, 50, pp. 1239-1246.
International Preliminary Examination Report (PCT/IPEA/409 and PCT/IPEA/416) (translated) issued for PCT/FR01/02799, 2002.

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