C07C 209/52
By reduction of imines or imino-ethers
Official title: by reduction of imines or imino-ethers (C07C209/24 takes precedence)
C07C209/52 (By reduction of imines or imino-ethers) appears on 159 US grants and 112 published applications in this corpus.
Search patents in C07C- Granted patents
- 159
- Published applications
- 112
- Assignees
- 114
- Inventors
- 473
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 2 |
| 2002 | 4 | 7 |
| 2003 | 6 | 3 |
| 2004 | 6 | 7 |
| 2005 | 3 | 7 |
| 2006 | 4 | 5 |
| 2007 | 5 | 6 |
| 2008 | 5 | 9 |
| 2009 | 2 | 3 |
| 2010 | 2 | 6 |
| 2011 | 4 | 2 |
| 2012 | 3 | 2 |
| 2013 | 1 | 4 |
| 2014 | 5 | 4 |
| 2015 | 6 | 8 |
| 2016 | 6 | 7 |
| 2017 | 5 | 5 |
| 2018 | 7 | 4 |
| 2019 | 5 | 2 |
| 2020 | 2 | 2 |
| 2021 | 1 | 3 |
| 2022 | 1 | 7 |
| 2023 | 0 | 2 |
| 2024 | 4 | 4 |
| 2025 | 2 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Synthetic methods for preparation of 4-(2-chloro-4-methoxy-5-methylphenyl)-n-[(1S)-2-cyclopropyl-1-(3-fluoro-4-methylphenyl)ethyl]-5-methyl-n-prop-2-ynyl-1,3-thiazol-2-amine24 Mar 2026US 12,582,634 B2Neurocrine Biosciences, Inc.
- Materials comprising carbon-embedded nickel nanoparticles, processes for their manufacture, and use as heterogeneous catalysts10 Feb 2026US 12,544,741 B2Evonik Operations GmbH
- Hydrogenation of imines with RU complexes14 Oct 2025US 12,441,700 B2Firmenichi SA
- Materials comprising carbon-embedded cobalt nanoparticles, processes for their manufacture, and use as heterogeneous catalysts27 May 2025US 12,311,342 B2Evonik Operations GmbH
- Strongly-polarized molecule, and single molecule field effect transistor prepared therefrom24 Dec 2024US 12,173,016 B2Peking University
- New aliphatic polyamines for use as curing agent for epoxy resins6 Feb 2025US 2025/0043065 A1BASF SE
- Process for the preparation of the salbutamol intermediate28 Nov 2024US 2024/0391866 A1Yeda Research and Development Co. Ltd.
- Method for manufacture of isophoronediamine22 Aug 2024US 2024/0279155 A1BASF SE
- Frustrated lewis pair-impregnated porous materials and uses thereof15 Aug 2024US 2024/0269659 A1University of South Florida
- Synthetic methods for preparation of 4-(2-chloro-4-methoxy-5-methylphenyl)-n-[(1s)-2-cyclopropyl-1-(3-fluoro-4-methylphenyl)ethyl]-5-methyl-n-prop-2-ynyl-1,3-thiazol-2-amine18 Jul 2024US 2024/0238257 A1Neurocrine Biosciences, Inc.
Most cited
By later US patents
- Process for preparing optically active compounds54US 6,184,381 B2Asahi Kasei Kogyo Kabushiki Kaisha · 2001
- Process for the preparation of chiral 1-aryl-2-aminopropanes41US 5,360,724 ACelgene Corporation · 1994
- Process for the preparation of optically active secondary amines33US 5,011,995 ACiba-Geigy Corporation · 1991
- Ferrocenyl diphosphines as ligands for homogeneous catalysts30US 5,371,256 ACiba-Geigy Corporation · 1994
- Catalytic reduction of organic carbonyls using metal catalysts29US 5,220,020 AMassachusetts Institute of Technology · 1993