US3706808A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nitroalkanes
Assignee: Purdue Research Foundation
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Filing: 1971-10-18
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Granted: 1972-12-19
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Expires: 1991-10-18
Abstract
Abstract A process for the production of a nitroalkane or dinitroalkane by reacting an olefin or diolefin with nitric acid in the presence of a lower aliphatic monocarboxylic acid anhydride, thereby producing a nitro-ester or dinitro-ester, and reducing the nitro-ester or dinitro-ester with an alkali borohydride to produce the nitroalkane or dinitroalkane.
Inventors
- 👤 Gustave Bryant Bachman
- 👤 Stephen E Eisenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:35
CPC Classifications
C; C07; C07C; C07C201/00; C07C201/06; C07C201/14; C07C2601/00; C07C2601/12; C07C2601/14
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
11 words
The process of claim 1 wherein said olefin is a diolefin.
Claim 2
Dependent Claim
12 words
The process of claim 1 wherein said acid anhydride is acetic anhydride.
Claim 3
Dependent Claim
29 words
The process of claim 1 wherein said olefin is a 1-olefin and step (b) is effected in the presence of sulfuric acid, 0.01-0.02 moles per mole of said olefin.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein said nitric acid is an aqueous solution containing 70% HNO3.
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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |