US2580070A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of acyl halides
Assignee: EIDP Inc
•
Filing: 1948-03-11
•
Granted: 1951-12-25
•
Expires: 1968-03-11
Abstract
No abstract record available.
Inventors
- 👤 Richard E Brooks
- 👤 Irving D Webb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:57
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/58
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR THE SYNTHESIS OF ACYL HALIDES OF THE FORMULA RCOX, WHEREIN R IS A TERTIARY ALKYL GROUP CONTAINING FROM 4 TO 7 CARBON ATOMS AND X IS A HALOGEN ATOM OF THE CLASS CONSISTING OF CHLORINE AND BROMINE, WHICH COMPRISES INTERACTING AN ALKYL HALIDE OF THE FORMULA RX WITH CARBON MONOXIDE IN THE PRESENCE OF BORON TRIFLUORIDE, AT A TEMPERATURE OF -25* TO +200* C., UNDER A PRESSURE IN EXCESS OF 10 ATMOSPHERES, WHEREBY AN ACYL HALIDE OF THE FORMULA RCOX IS PRODUCED, AND THEREAFTER SEPARATING THE SAID ACYL HALIDE FROM THE RESULTING MIXTURE.
Claim 2
Dependent Claim
96 words
A PROCESS FOR THE SYNTHESIS OF ACYL HALIDES OF THE FORMULA RCOX, WHEREIN R IS A TERTIARY ALKYL GROUP CONTAINING FROM 4 TO 7 CARBON ATOMS AND X IS A HALOGEN ATOM OF THE CLASS CONSISTING OF CHLORINE AND BROMINE, WHICH COMPRISES INTERACTING AN ALKYL HALIDE OF THE FORMULA RX WITH CARBON MONOXIDE IN THE PRESENCE OF BORON TRIFLUORIDE, AT A TEMPERATURE OF -25* TO +200* C., UNDER A PRESSURE IN EXCESS OF 10 ATMOSPHERES, WHEREBY AN ACYL HALIDE OF THE FORMULA RCOX IS PRODUCED, AND THEREAFTER SEPARATING THE SAID ACYL HALIDE FROM THE RESULTING MIXTURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |