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US4225534A
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Process for the production of 2-chlorobenzonitrile derivatives
Assignee: Nippon Kayaku Co Ltd
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Filing: 1979-06-07
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Granted: 1980-09-30
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Expires: 1999-06-07
Abstract
Abstract A process for the production of 2-chlorobenzonitrile derivatives represented by the general formula (I): <IMAGE> (I) (wherein n is a number of 1 or 2) characterized by reacting a compound of the general formula (II): <IMAGE> (II) (wherein Cln is as defined above) with lithium chloride or a mixture of lithium chloride and anhydrous aluminum chloride or with lithium aluminum chloride in an aprotic solvent.
Inventors
- 👤 Hiroshi Yoshikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:39
CPC Classifications
C; C07; C07C; C07C255/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
61 words
A process for producing 2-chlorobenzonitrile derivatives represented by the general formula (I): ##STR5## (wherein n is a number of 1 or 2) characterized by reacting a compound of the general formula (II): ##STR6## (wherein Cl n is as defined above) with lithium chloride or a mixture of lithium chloride and anhydrous aluminum chloride or with lithium aluminum chloride in aprotic solvent.
Claim 2
Dependent Claim
61 words
A process for producing 2-chlorobenzonitrile derivatives represented by the general formula (I): ##STR5## (wherein n is a number of 1 or 2) characterized by reacting a compound of the general formula (II): ##STR6## (wherein Cl n is as defined above) with lithium chloride or a mixture of lithium chloride and anhydrous aluminum chloride or with lithium aluminum chloride in aprotic solvent.
Claim 3
Dependent Claim
15 words
The process according to claim 1, wherein the compound of the formula (II) is 2-chloro-6-nitrobenzonitrile.
Claim 4
Dependent Claim
15 words
The process according to claim 1, wherein the compound of the formula (II) is 4-chloro-2-nitrobenzonitrile.
Claim 5
Dependent Claim
15 words
The process according to claim 1, wherein the compound of the formula (II) is 2,3-dichloro-6-nitrobenzonitrile.
Claim 6
Dependent Claim
15 words
The process according to claim 1, wherein the compound of the formula (II) is 4,5-dichloro-2-nitrobenzonitrile.
Claim 7
Dependent Claim
18 words
The process according to claim 1, wherein the compound of the formula (II) is reacted with lithium chloride.
Claim 8
Dependent Claim
25 words
The process according to claim 1, wherein the compound of the formula (II) is reacted with a mixture of lithium chloride and anhydrous aluminum chloride.
Claim 9
Dependent Claim
19 words
The process according to claim 1, wherein the compound of the formula (II) is reacted with lithium aluminum chloride.
Claim 10
Dependent Claim
25 words
The process according to claim 2, wherein the compound of the formula (II) is reacted with a mixture of lithium chloride and anhydrous aluminum chloride.
Claim 11
Dependent Claim
19 words
The process according to claim 2, wherein the compound of the formula (II) is reacted with lithium aluminum chloride.
References Cited (Backward Citations)
US3185725A
Cited
US3351651A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-30 | 1984-03-31 | 1984-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-30 | 1988-03-31 | 1988-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-30 | 1992-03-31 | 1992-09-30 | $7700.00 | Window Closed / Lapsed |