B01J 2231/4283
Using n nucleophiles
Official title: using N nucleophiles, e.g. Buchwald-Hartwig amination
B01J2231/4283 (Using n nucleophiles) appears on 97 US grants and 122 published applications in this corpus.
Search patents in B01J- Granted patents
- 97
- Published applications
- 122
- Assignees
- 89
- Inventors
- 265
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
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| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
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| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
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| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 2 |
| 2004 | 0 | 4 |
| 2005 | 2 | 1 |
| 2006 | 1 | 2 |
| 2007 | 3 | 4 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 3 | 2 |
| 2011 | 0 | 8 |
| 2012 | 2 | 5 |
| 2013 | 4 | 4 |
| 2014 | 4 | 5 |
| 2015 | 5 | 4 |
| 2016 | 10 | 15 |
| 2017 | 10 | 3 |
| 2018 | 3 | 5 |
| 2019 | 5 | 7 |
| 2020 | 4 | 6 |
| 2021 | 6 | 9 |
| 2022 | 5 | 9 |
| 2023 | 4 | 7 |
| 2024 | 5 | 7 |
| 2025 | 2 | 4 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Carbamate production method, carbamate ester production method, and urea derivative production method12 May 2026US 12,623,999 B2National Institute of Advanced Industrial Science and Technology
- Air-stable ni(0)-olefin complexes and their use as catalysts or precatalysts24 Feb 2026US 12,558,677 B2Studiengesellschaft Kohle mbH
- Tri-(adamantyl) phosphines and applications thereof3 Feb 2026US 12,539,508 B2The Trustees of Princeton University
- Ylide-functionalised phosphanes for use in metal complexes and homogeneous catalysis13 Jan 2026US 12,521,704 B2Umicore AG & Co. KG
- Continuous preparation method for penem intermediate map26 Aug 2025US 12,398,161 B2Jilin Asymchem Pharmaceuticals Co., Ltd.
- 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
- Preparation method for anti-tumor drug intermediate6 Aug 2026US 2026/0226021 A1Porton Pharma Solutions Ltd.
- Cyclic biaryl phosphines as ligands for palladium-containing catalysts in cross-coupling reactions11 Jun 2026US 2026/0158481 A1Heraeus Precious Metals GmbH & Co. KG
- Ylide-functionalized phosphanes for use in metal complexes and homogeneous catalysis30 Apr 2026US 2026/0115706 A1Umicore AG & Co. KG
- Tri-(adamantyl)phosphines and applications thereof16 Apr 2026US 2026/0102762 A1The Trustees of Princeton University
Most cited
By later US patents
- Catalyst system comprising transition metal and imidazoline-2-ylidene or imidazolidine-2-ylidene27US 6,316,380 B1University of New Orleans Research and Technology Foundation, Inc. · 2001
- Ferrocene bis(phosphonite) ligands and complexes for transition-metal-catalyzed reactions12US 5,817,850 ACiba Specialty Chemicals Corporation · 1998
- Stable cyclic (alkyl)(amino) carbenes as ligands for transition metal catalysts11US 7,312,331 B2The Regents of the University of California · 2007
- Process for preparing pyridine 2-carboxamides10US 5,380,861 AHoffmann-La Roche Inc. · 1995
- Process for producing aliphatic amines9US 4,404,404 AMillmaster Onyx Group, Inc. · 1983