US3332936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bis(phenylsulfonyl)diazomethanes and their preparation
Assignee: EIDP Inc
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Filing: 1962-09-28
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Granted: 1967-07-25
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Expires: 1982-09-28
Abstract
No abstract record available.
Inventors
- 👤 Diekmann Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:02
CPC Classifications
C; C07; C07C; C07C317/00; C07C317/26; C07C317/28; C08; C08F; C08F4/00; C08F4/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
43 words
A COMPOUND OF THE FORMULA (RSO2)2CN2 WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKARYL, ARALKYL, HALOALKYL, HALOARYL, CYANOALKYL, CYANOARYL, HYDROXYALKYL, ALKOXYALKYL, AKOXYARYL, CARBOXYALKYL, CARBALKOXYALKYL, ARYLOXYALKYL, AMINORAYL, AMIDOARYL, NITROALYL, AND ARYLSULFONYLARYL OF UP TO 19 CARBONS, FURYL, THIENYL AND PYRROLYL.
Claim 2
Dependent Claim
43 words
A COMPOUND OF THE FORMULA (RSO2)2CN2 WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKARYL, ARALKYL, HALOALKYL, HALOARYL, CYANOALKYL, CYANOARYL, HYDROXYALKYL, ALKOXYALKYL, AKOXYARYL, CARBOXYALKYL, CARBALKOXYALKYL, ARYLOXYALKYL, AMINORAYL, AMIDOARYL, NITROALYL, AND ARYLSULFONYLARYL OF UP TO 19 CARBONS, FURYL, THIENYL AND PYRROLYL.
Claim 3
Dependent Claim
110 words
THE PROCESS OF PRODUCING A BIS(SULFONYL)DIAZOMETHANE OF CLAIM 1 WHICH COMPRISES REACTING, UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT A TEMPERATURE OF BETWEEN ABOUT - 20*C. AND 30*C. IN AN INERT ORGANIC REACTION MEDIUM, (1) CARBONYL BROMIDE AZINE AND (2) A SULFINIC ACID SALT OF THE FORMULA (RSO2)AM, WHEREIN: M IS SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS; A, THE VALENCE OF M, IS AN INTEGER OF FROM 1 TO 2; AND R IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL, ALKARYL, ARALKYL, HALOALKYL, HALOARYL, CYANOALKYL, CYANOARYL, HYDROXYALKYL, ALKOXYALKYL, ALKOXYARYL, CARBOXYALKYL, CARBALKOXYALKYL, ARYLOXYALKYL, AMINOARYL, AMIDOARYL, NITROARYL, AND ARYLSULFONYLARYL OF UP TO 19 CARBONS, FURYL, THIENYL AND PYRROLYL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-24 | 1971-01-23 | 1971-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-24 | 1975-01-23 | 1975-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-24 | 1979-01-23 | 1979-07-25 | $7700.00 | Window Closed / Lapsed |