US3864401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted 2-aminomethyl-4,6-dihalophenols
Assignee: Merck and Co Inc
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Filing: 1970-12-23
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Granted: 1975-02-04
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Expires: 1990-12-23
Abstract
Abstract Substituted 2-aminomethyl-4,6-dihalophenols and their acid addition salts thereof wherein the phenyl nucleus may be further substituted by from 1 to 2 nuclear substituents which products are useful as diuretics and saluretics. The products may be prepared by one of two methods which comprises: (1) treating a substituted( 3,5-dihalo-2-hydroxy N-(substituted benzyl))carboxamide with an aqueous solution in the presence of an acid or base or (2) subjecting a substituted 2-hydroxy-3,5dihalobenzaldoxime to reduction.
Inventors
- 👤 Everett M Schultz
- 👤 Jr Edward J Cragoe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:29
CPC Classifications
C; C07; C07C; C07C47/00; C07C47/52; C07C47/575; C07C45/00; C07C45/61; C07C45/63; C07C47/56; C07C47/565
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
18 words
A compound according to claim 1 wherein X5 and X7 are methoxy and X6 and X8 are chloro.
Claim 4
Dependent Claim
20 words
A compound according to claim 1 wherein X5 is methyl; X6 is chloro; X7 is ethyl and X8 is chloro.
Claim 5
Dependent Claim
18 words
A compound according to claim 1 wherein X5 and X7 are methyl and X6 and X8 are chloro.
References Cited (Backward Citations)
US3118941A
Cited
US3419390A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |