Processes and intermediates for preparing a Btk inhibitor
US-12459948-B2 · Nov 4, 2025 · US
Preparation by ring-closure or hydrogenation
Preparation by ring-closure or hydrogenation · Cooperative Patent Classification (CPC)
Chemical and metallurgical processes, compounds, and materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | C07D211/02 |
| Official title | Preparation by ring-closure or hydrogenation |
| Display label | Preparation by ring-closure or hydrogenation |
| Total patents | 40 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 3 |
| 2016 | 6 |
| 2017 | 5 |
| 2018 | 3 |
| 2019 | 9 |
| 2020 | 6 |
| 2021 | 2 |
| 2022 | 2 |
| 2024 | 2 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Processes for preparing (3R,4R)-1-benzyl-N,4-dimethylpiperidin-3-amine or a salt thereof and processes for preparing tofacitinib using the same
US-12227478-B2 · Feb 18, 2025 · US
Process for preparing n,n'-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexane-1,6-diamine
US-2024182417-A1 · Jun 6, 2024 · US
Modified zeolite catalyst compositions and methods of use
US-2024165600-A1 · May 23, 2024 · US
Processes and intermediates for preparing a btk inhibitor
US-2022235058-A1 · Jul 28, 2022 · US
Processes for preparing (3r,4r)-1-benzyl-n,4-dimethylpiperidin-3-amine or a salt thereof and processes for preparing tofacitinib using the same
US-2022144774-A1 · May 12, 2022 · US
Hydrogenation process
US-2021253537-A1 · Aug 19, 2021 · US
Direct C—H amination and aza-annulation
US-10995056-B2 · May 4, 2021 · US
Homogeneous catalysts that are recoverable by host-guest interactions
US-10828628-B2 · Nov 10, 2020 · US
Method for preparing triacetone amine
US-10807954-B2 · Oct 20, 2020 · US
Water soluble homogeneous catalysts that are recoverable by phase selectivity and host-guest interactions
US-10737255-B2 · Aug 11, 2020 · US
Method for preparing triacetone amine
US-2020181088-A1 · Jun 11, 2020 · US
Enantioselective syntheses of heteroyohimbine natural product intermediates
US-10654865-B2 · May 19, 2020 · US
Process for preparing 2-(1-(tert-butoxycarbonyl)piperidine-4-yl)benzoic acid
US-10640467-B2 · May 5, 2020 · US
PROCESS FOR PREPARING 2-(1-(tert-BUTOXYCARBONYL)PIPERIDINE-4-YL)BENZOIC ACID
US-2019367455-A1 · Dec 5, 2019 · US
Homogeneous Catalysts That Are Recoverable By Host Guest Interactions
US-2019344255-A1 · Nov 14, 2019 · US
Enantioselective Syntheses of Heteroyohimbine Natural Product Intermediates
US-2019300540-A1 · Oct 3, 2019 · US
Biocatalytic transamination process
US-10407702-B2 · Sep 10, 2019 · US
Water Soluble Homogeneous Catalysts That Are Recoverable By Phase Selectivity And Host-Guest Interactions
US-2019270079-A1 · Sep 5, 2019 · US
Homogeneous catalysts that are recoverable by host guest interactions
US-10357763-B2 · Jul 23, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D211/02?
- CPC C07D211/02 is the Cooperative Patent Classification code for “Preparation by ring-closure or hydrogenation.”
- How many patents are filed under CPC C07D211/02 (Preparation by ring-closure or hydrogenation)?
- Our database includes 40 publications tagged with this CPC code.
- Is patent activity under CPC C07D211/02 growing?
- Publication counts under this code: 2 in 2024 vs 2 in 2025 (latest complete years).