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Patent US3712911A successfully refreshed from Google Patents.
US3712911A
Expired / Lapsed
US
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Metallized isocyanides
Assignee: BASF SE
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Filing: 1969-10-20
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Granted: 1973-01-23
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Expires: 1989-10-20
Abstract
Abstract A-METALATED ISOCYANIDES CONTAINING THE RADICAL >C(-ME)-N=C< AS AN ESSENTIAL PORTION OF THE MOLECULE. ME STANDS FOR ALKALI OR AN EQUIVALENT OF MAGNESIUM, ZINC OR CADIUM. THEIR MANUFACURED IS ACCOMPLISHED BY REPLACING HYDROGEN ON THE A-CARBON OF AN ISOCYANIDE WITH SAID METALS. THE COMPOUNDS OPEN UP NEW ROUTES FOR ORGANIC SYNTHESIS AND THEREFORE HAVE OUTSTANDING IMPORTANCE AS INTERMEDICATES, E.G. FOR THE MANUFACTURE OF OLEFINS, AMINO ACIDS AND HETEROCYCLES.
Inventors
- 👤 U Schoellkopf
- 👤 F Gerhart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:53
CPC Classifications
C; C07; C07C; C07C251/00; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/10; C07D263/12; C07F; C07F1/00; C07F3/00; C07F3/02; C07F3/06
Claims Analysis
Total Claims: 0
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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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |