Green synthesis method for forming substituted pyrroles
US-12410127-B1 · Sep 9, 2025 · US
with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atoms
with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atoms · 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 | C07D207/323 |
| Official title | with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atoms |
| Display label | with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atoms |
| Total patents | 65 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly growing.
| Year | Patents |
|---|---|
| 2015 | 5 |
| 2016 | 7 |
| 2017 | 9 |
| 2018 | 8 |
| 2019 | 6 |
| 2020 | 7 |
| 2021 | 2 |
| 2022 | 6 |
| 2023 | 2 |
| 2024 | 5 |
| 2025 | 8 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Synthesis of N-substituted pyrroles by green catalyst
US-12378191-B1 · Aug 5, 2025 · US
Humidity control agent and device
US-2025099913-A1 · Mar 27, 2025 · US
Synthesis of N-vinyl compounds by reacting NH-compounds with acetylene in presence of homogeneous phosphine catalyst
US-12172958-B2 · Dec 24, 2024 · US
Synthesis of n-vinyl compounds by reacting nh-compounds with acetylene in presence of homogeneous phosphine catalyst
US-2024270690-A1 · Aug 15, 2024 · US
Ionic compound and application thereof, perovskite precursor solution, perovskite material, solar cell, and electric apparatus
US-2024224789-A1 · Jul 4, 2024 · US
Method for preparing nitrogen-containing heterocyclic compound and derivative thereof by enzymatic-chemical cascade method
US-12024732-B2 · Jul 2, 2024 · US
Method for preparing nitrogen-containing heterocyclic compound and derivative thereof by enzymatic-chemical cascade method
US-2024026400-A1 · Jan 25, 2024 · US
Two-step synthesis of pyrrole compounds from furan compounds
US-11608317-B2 · Mar 21, 2023 · US
Viral replication inhibitors
US-11566025-B2 · Jan 31, 2023 · US
Small molecule agonists of mucolipin 1 and uses thereof
US-2022315548-A1 · Oct 6, 2022 · US
Two-step synthesis of pyrrole compounds from furan compounds
US-2022298109-A1 · Sep 22, 2022 · US
Adducts formed from primary amines, dicarbonyl derivatives, inorganic oxide hydroxydes and sp2-hybridized carbon allotropes
US-11414383-B2 · Aug 16, 2022 · US
Method for labeling of aldehyde containing target molecules
US-11293060-B2 · Apr 5, 2022 · US
Method for labeling of aldehyde containing target molecules
US-11236386-B2 · Feb 1, 2022 · US
Composition, resist underlayer film, method of forming resist underlayer film, method of producing patterned substrate, and compound
US-2022011672-A1 · Jan 13, 2022 · US
Adducts of pyrrole derivatives to carbon allotropes
US-11098012-B2 · Aug 24, 2021 · US
Ionic liquids comprising heteraromatic anions
US-10889544-B2 · Jan 12, 2021 · US
Phosphine free cobalt based catalyst, process for preparation and use thereof
US-2020384451-A1 · Dec 10, 2020 · US
Novel viral replication inhibitors
US-2020223845-A1 · Jul 16, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC C07D207/323?
- CPC C07D207/323 is the Cooperative Patent Classification code for “with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atoms.”
- How many patents are filed under CPC C07D207/323 (with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atoms)?
- Our database includes 65 publications tagged with this CPC code.
- Is patent activity under CPC C07D207/323 growing?
- Publication counts under this code: 5 in 2024 vs 8 in 2025 (latest complete years).