C07C 227/36
Racemisation of optical isomers
C07C227/36 (Racemisation of optical isomers) appears on 19 US grants and 16 published applications in this corpus.
Search patents in C07C- Granted patents
- 19
- Published applications
- 16
- Assignees
- 19
- Inventors
- 88
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
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| 1989 | 1 | 0 |
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| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
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| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 0 | 3 |
| 2017 | 3 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 3 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for preparing solriamfetol hydrochloride1 Sep 2026US 12,723,020 B2Procos S.P.A.
- Atropisomers and methods of altering enantiomeric excess10 Mar 2020US 10,584,077 B2The Florida State University Research Foundation, Inc.
- Method for producing dicarboxylic acid compound29 Jan 2019US 10,189,804 B2Daiichi Sankyo Company, Limited
- Mixtures of MGDA enantiomers, and process for making such mixtures31 Oct 2017US 9,802,884 B2BASF SE
- Compound, optical resolution method, and derivative of an optical isomer of an amino acid23 May 2017US 9,656,948 B2Kyushu University, National University Corporation
- Novel process for preparing solriamfetol hydrochloride7 Dec 2023US 2023/0391715 A1Procos S.P.A.
- Method for racemic preparation of chiral b-amino acids and derivatives thereof11 May 2023US 2023/0142248 A1Zhejiang Jiuzhou Pharmaceutical Co., Ltd.
- Process for manufacture of a complexing agent4 May 2023US 2023/0135390 A1BASF SE
- Method for the stereoisomerization of chiral compounds9 Dec 2021US 2021/0380503 A1Eberhard Karls Urilversitat Tubingen
- Atropisomers and Methods of Altering Enantiomeric Excess28 Jun 2018US 2018/0179120 A1The Florida State University Research Foundation, Inc.
Most cited
By later US patents
- Processes for preparing L!- or D!-homoalanin-4-yl-(methyl)phosphinic acid and salts thereof by racemate resolution15US 5,767,309 AHoechst Schering AgrEvo GmbH · 1998
- Racemization of optically active amines7US 3,970,700 ASumitomo Chemical Company, Limited · 1976
- Processes for preparing L!- or D!-homoalanin-4-yl-(methyl) phosphinic acid and salts thereof by racemate resolution5US 5,869,668 AHoechst Schering AgrEvo GmbH · 1999
- Process for obtaining active L-.alpha.-amino carboxylic acids from corresponding racemic d, L-.alpha.-amino carboxylic acids3US 6,114,163 ADegussa AG · 2000
- Process for preparing D-alloisoleucine and intermediates for preparation3US 6,310,242 B1Yamakawa Chemical Industry Co., Ltd. · 2001