Process for the preparation of threo-methylphenidate hydrochloride

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Feb 21, 2006
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Sep 9, 2004
app pub date
Mar 4, 2004
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Mar 7, 2003

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Abstract

The present invention provides a process for the preparation of threo-methylphenidate hydrochloride. According to a preferred embodiment, the process comprises the following steps: (a) contacting 1-(phenylglyoxylyl)piperidine arenesulfonylhydrazone of the formula ##STR1##

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ISP INVESTMENTS INC	1011 CENTRE ROAD SUITE 315 WILMINGTON DE 19805

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C07D:HETEROCYCLIC COMPOUNDS

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Inventor Name	Address	# of filed Patents	Total Citations
Gutman, Arie	Haifa, IL	18	109
Nisnevich, Gennady	Haifa, IL	27	97
Shalimov, Anton	Haifa, IL	2	2
Sotrihin, Maxim	Haifa, IL	4	3
Zaltsman, Igor	Haifa, IL	4	2

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Process for the preparation of threo-methylphenidate hydrochloride

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United States of America Patent

10793600

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PATENT NO	7002016
APP PUB NO	20040176412A1
SERIAL NO	10793600
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
February 21, 2006	US,7002016,B2 US7002016B2	GRANTED PATENT AS SECOND PUBLICATION
September 09, 2004	US,20040176412,A1 US20040176412A1	FIRST PUBLISHED PATENT APPLICATION

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10793600

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