US4467125A
Expired / Lapsed
US
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Nitro-methyl or ethyl substituted benzotrifluoride
Assignee: Monsanto Co
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Filing: 1983-06-10
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Granted: 1984-08-21
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Expires: 2003-06-10
Abstract
Abstract The invention herein pertains to nitro-methyl or ethyl substituted benzotrifluoride compounds useful as chemical intermediates and a process for their preparation. The chemical intermediates are useful for the preparation of substituted anilines which are precursors for a new class of 2-haloacetanilide herbicides.
Inventors
- 👤 John P. Chupp
- 👤 Gerhard H. Alt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:10
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/07; C07C205/11
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
15 words
A compound having the formula: ##STR2## wherein the above formula R is methyl or ethyl.
Claim 2
Dependent Claim
15 words
A compound having the formula: ##STR2## wherein the above formula R is methyl or ethyl.
Claim 3
Dependent Claim
9 words
The compound of claim 1 wherein R is methyl.
Claim 4
Dependent Claim
9 words
The compound of claim 1 wherein R is ethyl.
Claim 5
Dependent Claim
28 words
A process for preparing a compound having the formula: ##STR3## which comprises nitrating the compound having the formula: ##STR4## wherein the above formulae R is methyl or ethyl.
Claim 6
Dependent Claim
28 words
A process for preparing a compound having the formula: ##STR3## which comprises nitrating the compound having the formula: ##STR4## wherein the above formulae R is methyl or ethyl.
Claim 7
Dependent Claim
9 words
The process of claim 4 wherein R is methyl.
Claim 8
Dependent Claim
9 words
The process of claim 4 wherein R is ethyl.
Claim 9
Dependent Claim
25 words
The process of claim 4 wherein the compound of formula II is nitrated with about three to about ten molar equivalents of concentrated nitric acid.
Claim 10
Dependent Claim
22 words
The process of claim 4 wherein said nitration is carried out at a temperature of about -40° C. to about 50° C.
Claim 11
Dependent Claim
22 words
The process of claim 4 wherein said nitration is carried out at a temperature from about -20° C. to about 10° C.
Claim 12
Dependent Claim
23 words
The process of claim 4 wherein said process further includes the step of separating the 2-nitro isomer from the reaction medium by distillation.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |