US2764591A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for benzylating certain aromatic amines
Assignee: Individual
•
Filing: 1952-12-10
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Granted: 1956-09-25
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Expires: 1972-12-10
Abstract
No abstract record available.
Inventors
- 👤 Sprinzak Yair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:29
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS OF N-MONO-BENZYLATING A PRIMARY AMINE OF THE GENERAL FORMULA R.(NH2)N IN A HOMOGENEOUS OF TERACTION SYSTEM AND WITHOUT DETETABLE FORMATION OF TERTIARY AMINE BY REACTING THE PRIMARY AMINE IN THE PRESENCE OF ANHYDROUS ALKALI HYDROXIDE WITH BENZYL ALCOHOL AND CONTINUOUSLY REMOVING THE WATER FORMED BY THE REACTION IN WHICH FORMULA R STANDS FOR A RADICAL SELECTED FROM THE GROUP-CONSISTING OF PHENYL, NAPHTHYL, LOWER-ALKYL-PHENYL. LOWER-ALKOXY-PHENYL, DIPHENYL, PHENOXY-PHENYL, PHENYLAMINO-PHENYL, AMINOPHENOXY-PHENYL, ALKYLAMINO PHENYL, PYRIDYL AND LOWER-ALKYL-PYRIDYL RADICALS, AND N IS AN INLEGER FROM 1 TO 2.
Claim 2
Dependent Claim
85 words
A PROCESS OF N-MONO-BENZYLATING A PRIMARY AMINE OF THE GENERAL FORMULA R.(NH2)N IN A HOMOGENEOUS OF TERACTION SYSTEM AND WITHOUT DETETABLE FORMATION OF TERTIARY AMINE BY REACTING THE PRIMARY AMINE IN THE PRESENCE OF ANHYDROUS ALKALI HYDROXIDE WITH BENZYL ALCOHOL AND CONTINUOUSLY REMOVING THE WATER FORMED BY THE REACTION IN WHICH FORMULA R STANDS FOR A RADICAL SELECTED FROM THE GROUP-CONSISTING OF PHENYL, NAPHTHYL, LOWER-ALKYL-PHENYL. LOWER-ALKOXY-PHENYL, DIPHENYL, PHENOXY-PHENYL, PHENYLAMINO-PHENYL, AMINOPHENOXY-PHENYL, ALKYLAMINO PHENYL, PYRIDYL AND LOWER-ALKYL-PYRIDYL RADICALS, AND N IS AN INLEGER FROM 1 TO 2.
References Cited (Backward Citations)
US2451642A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-25 | 1960-03-26 | 1960-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-25 | 1964-03-26 | 1964-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-25 | 1968-03-26 | 1968-09-25 | $7700.00 | Window Closed / Lapsed |