US2977372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing substituted tetrazoles
Assignee: Individual
•
Filing: 1958-04-09
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Granted: 1961-03-28
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Expires: 1978-04-09
Abstract
No abstract record available.
Inventors
- 👤 William G Finnegan
- 👤 Robert H Boschan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:11
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
THE PROCESS FOR PREPARING 5-SUBSTITUTED TETRAZOLES WHICH COMPRISES REACTING FOR PERIODS UP TO ABOUT 24 HOURS AT A TEMPERATURE FROM ABOUT 75*C. TO ABOUT 150* C. A NITRILE FROM THE CLASS CONSISTING OF BENZO-NITRILE, AMINO SUBSTITUTED BENZO-NITRILES, LOWER ALKOXY SUBSTITUTED BENZO-NITRILES, LOWER ALKYL SUBSTITUTED BENZO-NITRILES, NITRO SUBSTITUTED BENZO-NITRILES, CYANO SUBSTITUTED BENZONITRILES, ARALKYL NITRILES, LOWER ALKYL NITRILES, PERFLUORO LOWER ALKYL NITRILES, CARBETHOXY LOWER ALKYL NITRILES AND ALKANOL NITRIELS AND AN ALKALI METAL AZIDE IN A SOLVENT FROM THE CLASS CONSISTING OF ETHYL ALCOHOL, METHYL CELLOSOLVE, ETHYL CELLOSOLVE, DIMETHYLFORMAMIDE AND DIMETHYLSULFOXIDE IN THE PRESENCE OF A RECTANT SELECTED FROM THE CLASS CONSISTING OF AMMONIUM CHLORIDE, DIMETHYLAMMONIUM CHLORIDE, TRIMETHYLAMMONIUM CHLORIDE, DI-N-BUTYLAMMONIUM CHLORIDE, ANILINE HYDROCHLORIDE, PIPERIDINIUM CHLORIDE, MORPHOLINIUM CHLORIDE, TETRAMETHYLAMMONIUM CHLORIDE, AND LITHIUM CHLORIDE.
Claim 2
Dependent Claim
120 words
THE PROCESS FOR PREPARING 5-SUBSTITUTED TETRAZOLES WHICH COMPRISES REACTING FOR PERIODS UP TO ABOUT 24 HOURS AT A TEMPERATURE FROM ABOUT 75*C. TO ABOUT 150* C. A NITRILE FROM THE CLASS CONSISTING OF BENZO-NITRILE, AMINO SUBSTITUTED BENZO-NITRILES, LOWER ALKOXY SUBSTITUTED BENZO-NITRILES, LOWER ALKYL SUBSTITUTED BENZO-NITRILES, NITRO SUBSTITUTED BENZO-NITRILES, CYANO SUBSTITUTED BENZONITRILES, ARALKYL NITRILES, LOWER ALKYL NITRILES, PERFLUORO LOWER ALKYL NITRILES, CARBETHOXY LOWER ALKYL NITRILES AND ALKANOL NITRIELS AND AN ALKALI METAL AZIDE IN A SOLVENT FROM THE CLASS CONSISTING OF ETHYL ALCOHOL, METHYL CELLOSOLVE, ETHYL CELLOSOLVE, DIMETHYLFORMAMIDE AND DIMETHYLSULFOXIDE IN THE PRESENCE OF A RECTANT SELECTED FROM THE CLASS CONSISTING OF AMMONIUM CHLORIDE, DIMETHYLAMMONIUM CHLORIDE, TRIMETHYLAMMONIUM CHLORIDE, DI-N-BUTYLAMMONIUM CHLORIDE, ANILINE HYDROCHLORIDE, PIPERIDINIUM CHLORIDE, MORPHOLINIUM CHLORIDE, TETRAMETHYLAMMONIUM CHLORIDE, AND LITHIUM CHLORIDE.
Claim 3
Dependent Claim
100 words
THE PROCESS FOR PREPARING 5-SUBSTITUTED TETRAZOLES WHICH COMPRISES REACTING FOR PERIODS UP TO ABOUT TWENTYFOUR HOURS AT A TEMPERATURE FROM ABOUT 75*C. TO ABOUT 150*C. AN ORGANIC NITRILE FROM THE GROUP CONSISTING OF BENZO-NITRILE, AMINO SUBSTITUTED BENZO-NITRILES, LOWER ALKOXY SUBSTITUTED BENZO-NITRILES, LOWER ALKYL SUBSTITUTED BENZO-NITRILES, NITRO SUBSTITUTED BENZO-NITRILES, CYANO SUBSTITUTED BENZO-NITRILES, ARALKYL NITRILES, LOWER ALKYL NITRILES, PERFLUORO LOWER ALKYL NITRILES, CARBETHOXY LOWER ALKYL NITRILES AND ALKANOL NITRILES AND AN AZIDE FROM THE CLASS CONSISTING OF AMMONIUM AZIDE AND LOWER ALKYL SUBSTITUTED AMMONIUM AZIDE IN A SOLVENT FROM THE CLASS CONSISTING OF ETHYL ALCOHOL, METHYL CELLOSOLVE, ETHYL CELLOSOLVE, DIMETHYLFORMAMIDE AND DIMETHYLSULFOXIDE.
Claim 4
Dependent Claim
100 words
THE PROCESS FOR PREPARING 5-SUBSTITUTED TETRAZOLES WHICH COMPRISES REACTING FOR PERIODS UP TO ABOUT TWENTYFOUR HOURS AT A TEMPERATURE FROM ABOUT 75*C. TO ABOUT 150*C. AN ORGANIC NITRILE FROM THE GROUP CONSISTING OF BENZO-NITRILE, AMINO SUBSTITUTED BENZO-NITRILES, LOWER ALKOXY SUBSTITUTED BENZO-NITRILES, LOWER ALKYL SUBSTITUTED BENZO-NITRILES, NITRO SUBSTITUTED BENZO-NITRILES, CYANO SUBSTITUTED BENZO-NITRILES, ARALKYL NITRILES, LOWER ALKYL NITRILES, PERFLUORO LOWER ALKYL NITRILES, CARBETHOXY LOWER ALKYL NITRILES AND ALKANOL NITRILES AND AN AZIDE FROM THE CLASS CONSISTING OF AMMONIUM AZIDE AND LOWER ALKYL SUBSTITUTED AMMONIUM AZIDE IN A SOLVENT FROM THE CLASS CONSISTING OF ETHYL ALCOHOL, METHYL CELLOSOLVE, ETHYL CELLOSOLVE, DIMETHYLFORMAMIDE AND DIMETHYLSULFOXIDE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |