Patent FR985500A successfully refreshed from Google Patents.
US4198510A
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Piperidenylmethylidene phosphonylamidines
Assignee: Sanwa Kagaku Kenkyusho Co Ltd
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Filing: 1978-07-07
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Granted: 1980-04-15
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Expires: 1998-07-07
Abstract
Abstract A process for the preparation of carboxylic acids represented by a formula ##STR1## wherein R 1 represents hydrogen atom or a lower alkyl radical, R 2 represents hydrogen atom, lower alkyl or allyl radical and R 3 represents phenyl, substituted phenyl, substituted naphthyl, dibenzofuranyl or substituted biphenyl. Following novel enamine and amidine compounds as intermediates for manufacturing the carboxylic acids and processes for the manufacture of said enamine and amidine compounds ##STR2## wherein R 1 , R 2 and R 3 represent the meanings as referred to and R 4 represents dimethylamino, pyrrolidyl, piperidyl or morpholyl.
Inventors
- 👤 Takayuki Shioiri
- 👤 Nobutaka Kawai
- 👤 Masatoshi Ban
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:41
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/02; C07D295/027; C07D295/03; C07C; C07C45/00; C07C45/45; C07C45/46; C07C49/00; C07C49/76; C07C51/00; C07D295/04; C07D295/06; C07D295/073; C07D295/08; C07D295/096; C07D295/10; C07D295/112; C07D307/00; C07D307/77; C07D307/91; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/572; C07F9/576; C07F9/59; C07F9/6527; C07F9/6533
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
An amidine compound represented by the formula wherein R 1 represents hydrogen or lower alkyl, R 2 represents hydrogen, lower alkyl or allyl, R 2 represents phenyl, lower alkyl substituted phenyl, lower alkoxy substituted phenyl, cyclohexenyl substituted phenyl, benzoyl substituted phenyl, methoxy substituted naphthyl, dibenzofuranyl, or halogen substituted biphenyl and R 4 represents 1-piperidyl.
Claim 2
Dependent Claim
54 words
An amidine compound represented by the formula wherein R 1 represents hydrogen or lower alkyl, R 2 represents hydrogen, lower alkyl or allyl, R 2 represents phenyl, lower alkyl substituted phenyl, lower alkoxy substituted phenyl, cyclohexenyl substituted phenyl, benzoyl substituted phenyl, methoxy substituted naphthyl, dibenzofuranyl, or halogen substituted biphenyl and R 4 represents 1-piperidyl.
References Cited (Backward Citations)
US3975522A
Cited
US3949022A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |