Processes for preparing 2-(4-chlorophenyl)-n-((2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-5-yl)methyl)-2,2-difluoroacetamide
US-12577223-B2 · Mar 17, 2026 · US
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by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified hydroxy groups
by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified hydroxy groups · 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 | C07C253/16 |
| Official title | by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified hydroxy groups |
| Display label | by reaction of cyanides with lactones or compounds containing hydroxy groups or etherified or esterified hydroxy groups |
| Total patents | 21 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 1 |
| 2016 | 2 |
| 2017 | 1 |
| 2018 | 1 |
| 2020 | 1 |
| 2021 | 3 |
| 2022 | 4 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 2 |
| 2026 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for the purification of ethylene cyanohydrin
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Method for the purification of ethylene cyanohydrin
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Photoredox methods for radiocyanation of arenes and use thereof
US-2025129016-A1 · Apr 24, 2025 · US
Method of preparing phthalonitrile-based compound
US-2024199536-A1 · Jun 20, 2024 · US
A method for the purification of ethylene cyanohydrin
US-2024034715-A1 · Feb 1, 2024 · US
Production of acetonitrile and/or hydrogen cyanide from ammonia and methanol
US-11760718-B2 · Sep 19, 2023 · US
Continuous flow synthesis of ibuprofen
US-11639326-B2 · May 2, 2023 · US
Process for manufacturing an aqueous hydrogen peroxide solution
US-2022274833-A1 · Sep 1, 2022 · US
Amidite compound and method for producing polynucleotide using said compound
US-11401296-B2 · Aug 2, 2022 · US
Processes for preparing 2-(4-chlorophenyl)-n-((2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-5-yl)methyl)-2,2-difluoroacetamide
US-2022213056-A1 · Jul 7, 2022 · US
Processes for preparing 2-(4-chlorophenyl)-N-((2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-5-yl)methyl)-2,2-difluoroacetamide
US-11312699-B2 · Apr 26, 2022 · US
Amidite compound and method for producing polynucleotide using said compound
US-2021238217-A1 · Aug 5, 2021 · US
Processes for preparing 2-(4-chlorophenyl)-n-((2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-5-yl)methyl)-2,2-difluoroacetamide
US-2021171493-A1 · Jun 10, 2021 · US
Continuous flow synthesis of ibuprofen
US-2021114962-A1 · Apr 22, 2021 · US
Production of acetonitrile and/or hydrogen cyanide from ammonia and methanol
US-2020095193-A1 · Mar 26, 2020 · US
Uses of certain platinoid accumulating plants for use in organic chemical reactions
US-10066029-B2 · Sep 4, 2018 · US
Method of synthesising amino acid by metathesis, hydrolysis, then hydrogenation
US-9790168-B2 · Oct 17, 2017 · US
Uses of certain platinoid accumulating plants for use in organic chemical reactions
US-2016159934-A1 · Jun 9, 2016 · US
Method of synthesising amino acid by metathesis, hydrolysis, then hydrogenation
US-2016002147-A1 · Jan 7, 2016 · US