B01J 2231/40
Substitution reactions at carbon centres
Official title: Substitution reactions at carbon centres, e.g. C-C or C-X, i.e. carbon-hetero atom, cross-coupling, C-H activation or ring-opening reactions
B01J2231/40 (Substitution reactions at carbon centres) appears on 1,136 US grants and 1,120 published applications in this corpus.
Search patents in B01J- Granted patents
- 1,136
- Published applications
- 1,120
- Assignees
- 668
- Inventors
- 3,147
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 6 | 0 |
| 1980 | 6 | 0 |
| 1981 | 13 | 0 |
| 1982 | 9 | 0 |
| 1983 | 11 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 8 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 13 | 0 |
| 1993 | 9 | 0 |
| 1994 | 17 | 0 |
| 1995 | 11 | 0 |
| 1996 | 12 | 0 |
| 1997 | 18 | 0 |
| 1998 | 24 | 0 |
| 1999 | 20 | 0 |
| 2000 | 34 | 0 |
| 2001 | 35 | 9 |
| 2002 | 38 | 27 |
| 2003 | 33 | 42 |
| 2004 | 26 | 47 |
| 2005 | 23 | 41 |
| 2006 | 31 | 36 |
| 2007 | 20 | 38 |
| 2008 | 9 | 19 |
| 2009 | 13 | 30 |
| 2010 | 39 | 36 |
| 2011 | 17 | 30 |
| 2012 | 24 | 34 |
| 2013 | 33 | 38 |
| 2014 | 33 | 25 |
| 2015 | 35 | 51 |
| 2016 | 39 | 62 |
| 2017 | 58 | 63 |
| 2018 | 49 | 68 |
| 2019 | 57 | 64 |
| 2020 | 48 | 60 |
| 2021 | 57 | 71 |
| 2022 | 32 | 44 |
| 2023 | 35 | 60 |
| 2024 | 37 | 58 |
| 2025 | 26 | 40 |
| 2026 | 22 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01J 2231/42Catalytic cross-coupling, i.e. connection of previously not connected c-atoms or c- andIndexing code600
- B01J 2231/49Esterification or transesterificationIndexing code168
- B01J 2231/44Allylic alkylation, amination, alkoxylation or analoguesIndexing code129
- B01J 2231/48Ring-opening reactionsIndexing code109
- B01J 2231/46C-h or c-c activationIndexing code65
Recent patents
- Immobolized organometallic catalyst and application of same6 Oct 2026US 12,752,265 B2Saudi Arabian Oil Company
- Method for carrying out reaction of isatin compound and cyclopropenone compound at low catalytic amount22 Sep 2026US 12,741,972 B2Soochow University
- Methods for preparing (2S,3R,4R)-4,5-dihydroxyisoleucine derivative and intermediates thereof15 Sep 2026US 12,735,384 B2Inner Mongolia Duhe Innovation R & D Tech Co., Ltd
- Direct aromatic carbon-oxygen and carbon-hydrogen bond functionalization via organic photoredox catalyst8 Sep 2026US 12,729,169 B2The University of North Carolina at Chapel Hill
- Preparation method for pyrimidine-2-amine8 Sep 2026US 12,729,185 B2Institute for Basic Science
- Design and synthesis of electron-rich phosphine ligands for selective, sustainable cross-coupling reactions1 Oct 2026US 2026/0295571 A1The Curators of the University of Missouri
- Regio-controllable [2+2] benzannulation with two adjacent c(sp3)-h bonds20 Aug 2026US 2026/0242341 A1The Scripps Research Institute
- 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
- A catalyst composition for improving time to reach high esterification conversion of carboxylic acids/anhydrides6 Aug 2026US 2026/0225089 A1Wisconsin Alumni Research Foundation
- Preparation method for anti-tumor drug intermediate6 Aug 2026US 2026/0226021 A1Porton Pharma Solutions Ltd.
Most cited
By later US patents
- Low temperature ionic liquids109US 5,731,101 AAkzo Nobel N. V. · 1998
- Method for depositing a fluorocarbonsulfonic acid polymer on a support from a solution104US 4,661,411 AThe Dow Chemical Company · 1987
- Substituted aminomethylphosphines, compositions and coordination complexes of same, their synthesis and processes using same82US 6,043,363 ASymyx Technologies, Inc. · 2000
- Recyclable metathesis catalysts82US 6,921,735 B2The Trustees of Boston College · 2005
- Substituted aminomethylphosphines, coordination complexes of aminomethylphosphines and their synthesis77US 6,034,240 ASymyx Technologies, Inc. · 2000