C07C 221/00
Preparation of compounds containing amino groups and doubly-bound oxygen atoms bound to
Official title: Preparation of compounds containing amino groups and doubly-bound oxygen atoms bound to the same carbon skeleton
C07C221/00 (Preparation of compounds containing amino groups and doubly-bound oxygen atoms bound to) appears on 274 US grants and 257 published applications in this corpus.
Search patents in C07C- Granted patents
- 274
- Published applications
- 257
- Assignees
- 225
- Inventors
- 886
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 5 | 0 |
| 2002 | 5 | 7 |
| 2003 | 7 | 9 |
| 2004 | 5 | 9 |
| 2005 | 9 | 6 |
| 2006 | 5 | 6 |
| 2007 | 6 | 6 |
| 2008 | 2 | 4 |
| 2009 | 2 | 8 |
| 2010 | 6 | 7 |
| 2011 | 3 | 11 |
| 2012 | 2 | 6 |
| 2013 | 5 | 20 |
| 2014 | 13 | 15 |
| 2015 | 17 | 19 |
| 2016 | 21 | 21 |
| 2017 | 9 | 16 |
| 2018 | 12 | 12 |
| 2019 | 13 | 14 |
| 2020 | 3 | 14 |
| 2021 | 8 | 12 |
| 2022 | 12 | 9 |
| 2023 | 3 | 11 |
| 2024 | 5 | 6 |
| 2025 | 6 | 2 |
| 2026 | 2 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for synthesizing enantiopure (S)-methadone, (R)-methadone, racemic (R,S)-methadone and related analogue substances22 Sep 2026US 12,741,927 B2
- Process for the synthesis of anthranilic acid/amide compounds and intermediates thereof23 Jun 2026US 12,662,446 B2Pi Industries Ltd.
- Crystal forms and methods of synthesis of (2R, 6R)-hydroxynorketamine and (2S, 6S)-hydroxynorketamine18 Nov 2025US 12,473,251 B2The United States of America, as represented by the Secretary, Department of Health and Human Services
- Long-acting low-addiction HNK derivative and preparation method therefor11 Nov 2025US 12,466,785 B2Shenzhen Ruijian Biotechnology Co., Ltd
- Aromatic compound and preparation method therefor and use thereof8 Jul 2025US 12,351,565 B2Shanghai Zhigen Pharmaceutical & Technology Co., Ltd.
- Disperse dyes for dyeing polyester fibres8 Oct 2026US 2026/0308841 A1University of Leeds
- Catalyst for sp3-carbon-hydrogen-bond primary amination reaction, and method for preparing primary amine compound13 Aug 2026US 2026/0234096 A1West China Second University Hospital, Sichuan University
- Phosphine ligands and their use in coupling reactions13 Aug 2026US 2026/0234175 A1BASF SE
- Synthesis of 2-phenyl-2-amino-cyclohexan-1-one derivatives30 Jul 2026US 2026/0217643 A1
- Process for preparing cyantraniliprole via amino-cyano-benzene derivative26 Feb 2026US 2026/0055052 A1Adama Makhteshim Ltd.
Most cited
By later US patents
- Ligands for metals and improved metal-catalyzed processes based thereon143US 6,307,087 B1Massachusetts Institute of Technology · 2001
- Process for producing 4-trifluoromethylnicotinic acid129US 5,708,175 AIshihara Sangyo Kaisha, Ltd. · 1998
- Ligands for metals and improved metal-catalyzed processes based thereon100US 6,395,916 B1Massachusetts Institute of Technology · 2002
- Process for the preparation of o-aminophenyl cyclo-propyl ketone95US 5,362,911 AAmerican Cyanamid Company · 1994
- Ligands for metals and improved metal-catalyzed processes based thereon93US 7,223,879 B2Massachusetts Institute of Technology · 2007