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US3897491A
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Process for preparing alkyl or aryl phosphorus halides and mixed isomers thereof
Assignee: Stauffer Chemical Co
•
Filing: 1971-06-10
•
Granted: 1975-07-29
•
Expires: 1991-06-10
Abstract
Abstract Alkyl or aryl phosphonic or phosphonothioic dihalides and phosphinic or phosphinothioic monohalides are prepared by reacting an alkyl halide or aryl halide respectively with a trivalent phosphorus compound having at least two halogens attached thereto, and preferably three halogens such as phosphorus trihalide, in the presence of P4O10 or P4S10 under at least autogenous pressure at a temperature of from 200*C. to 450*C. The compounds obtained are useful as constituents in insecticides, fungicides, pharmaceuticals, and as intermediates in preparation of other organophosphorus compounds.
Inventors
- 👤 Arthur D F Toy
- 👤 Eugene H Uhing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:05
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/30; C07F9/34; C07F9/42
Claims Analysis
Total Claims: 59
Claim 1
Independent Claim
8 words
A METHOD FOR PREPARING COMPOUNDS OF THE FORMULA:
Claim 2
Independent Claim
8 words
A METHOD FOR PREPARING COMPOUNDS OF THE FORMULA:
Claim 3
Dependent Claim
11 words
The method as recited in claim 1 wherein R1 is halogen.
Claim 4
Dependent Claim
13 words
The method as recited in claim 1 wherein R1 and X are chlorine.
Claim 5
Dependent Claim
11 words
The method as recited in claim 1 wherein Y is oxygen.
Claim 6
Dependent Claim
11 words
The method as recited in claim 1 wherein Y is sulfur.
Claim 7
Dependent Claim
15 words
The method as recited in claim 1 wherein R is a C1 to C4 alkyl.
Claim 8
Dependent Claim
14 words
The method as recited in claim 1 wherein R is aryl of one ring.
Claim 9
Dependent Claim
15 words
The method as recited in claim 1 wherein n is 1 and m is 1.
Claim 10
Dependent Claim
22 words
The method as recited in claim 1 wherein said reaction is conducted at a temperture of from about 250*C. to about 350*C.
Claim 11
Dependent Claim
38 words
The method recited rcited in claim 1 wherein R is a C2 alkyl and n is 1 and wherein the reaction mixture further includes a hydrocarbon diluent selected from the group consisting of benzene, ethane, cyclohexane, and ethylene.
Claim 12
Dependent Claim
12 words
The method as recited in claim 10 wherein said diluent is ethylene.
Claim 13
Dependent Claim
46 words
The method as recited in claim 1 wherein R is an aryl radical of up to 3 fused rings, and wherein the reaction mixture further includes a compound of the formula RH wherein R is the same parent radical forming the R(X)n used in the reaction.
Claim 14
Dependent Claim
13 words
The method as recited in claim 12 wherein said aryl halide is chlorobenzene.
Claim 15
Dependent Claim
15 words
The method as recited in claim 12 wherein the trivalent phosphorus compound is phosphorus trichloride.
Claim 16
Dependent Claim
13 words
The method as recited in claim 12 wherein the phosphorus compound is P4O10.
Claim 17
Dependent Claim
13 words
The method as recited in claim 12 wherein said phosphorus compound is P4S10.
Claim 18
Dependent Claim
12 words
The method as recited in claim 12 wherein said diluent is benzene.
Claim 19
Dependent Claim
20 words
The method as recited in claim 12 wherein said reaction is conducted at a temperature of from 250*C. to 350*C.
Claim 20
Dependent Claim
18 words
The method as recited in claim 15 wherein the reaction is conducted in the presence of glass wool.
Claim 21
Dependent Claim
25 words
The method as recited in claim 12 wherein said aryl halide is chlorobenzene, said trivalent phosphorus compound is phosphorus trichloride, and said diluent is benzene.
Claim 22
Dependent Claim
4 words
Compounds of the formula:
Claim 23
Dependent Claim
4 words
Compounds of the formula:
Claim 24
Dependent Claim
10 words
Compounds as recited in claim 21 wherein Y is oxygen.
Claim 25
Dependent Claim
10 words
Compounds as recited in claim 21 wherein Y is sulfur.
Claim 26
Dependent Claim
10 words
Compounds as recited in claim 21 wherein n'''' is 0.
Claim 27
Dependent Claim
10 words
Compounds as recited in claim 21 wherein n'' is 2.
Claim 28
Dependent Claim
4 words
Compounds of the formula:
Claim 29
Dependent Claim
4 words
Compounds of the formula:
Claim 30
Dependent Claim
10 words
Compounds as recited in claim 26 wherein X is chlorine.
Claim 31
Dependent Claim
10 words
Compounds as recited in claim 26 wherein R2 is ethylene.
Claim 32
Dependent Claim
4 words
Compounds of the formula:
Claim 33
Dependent Claim
4 words
Compounds of the formula:
Claim 34
Dependent Claim
10 words
Compounds as recited in claim 29 wherein Y is oxygen.
Claim 35
Dependent Claim
10 words
Compounds as recited in claim 29 wherein Y is sulfur.
Claim 36
Dependent Claim
10 words
Compounds as recited in claim 29 wherein R1 is halogen.
Claim 37
Dependent Claim
10 words
Compounds as recited in claim 29 wherein R1 is chlorine.
Claim 38
Dependent Claim
10 words
Compounds as recited in claim 29 wherein X is chlorine.
Claim 39
Dependent Claim
16 words
Compounds as recited in claim 29 wherein n'''''''' is an integer of from 1 to 2.
Claim 40
Dependent Claim
4 words
Compounds of the formula:
Claim 41
Dependent Claim
4 words
Compounds of the formula:
Claim 42
Dependent Claim
10 words
Compounds as recited in claim 36 wherein R1 is halogen.
Claim 43
Dependent Claim
10 words
Compounds as recited in claim 36 wherein R1 is chlorine.
Claim 44
Dependent Claim
10 words
Compounds as recited in claim 36 wherein X is chlorine.
Claim 45
Dependent Claim
9 words
Compounds as recited in claim 36 wherein n''''''''''is 2.
Claim 46
Dependent Claim
8 words
A process for preparing compounds of the formula:
Claim 47
Dependent Claim
8 words
A process for preparing compounds of the formula:
Claim 48
Dependent Claim
13 words
The process as recited in claim 41 wherein R1 and X are chlorine.
Claim 49
Dependent Claim
19 words
The process as recited in claim 41 wherein the free bonds of the alkyl monohalide are satisfied by hydrogens.
Claim 50
Dependent Claim
8 words
A process for preparing compounds of the formula:
Claim 51
Dependent Claim
8 words
A process for preparing compounds of the formula:
Claim 52
Dependent Claim
21 words
The process as recited in claim 41 wherein the free valence bonds of the ethylenically unsaturated compound are satisfied by hydrogens.
Claim 53
Dependent Claim
13 words
The process as recited in claim 41 wherein R1 and X are chlorine.
Claim 54
Dependent Claim
11 words
The process as recited in claim 41 wherein Y is sulfur.
Claim 55
Dependent Claim
4 words
Compounds of the formula:
Claim 56
Dependent Claim
4 words
Compounds of the formula:
Claim 57
Dependent Claim
10 words
Compounds as recited in claim 48 wherein R1 is halogen.
Claim 58
Dependent Claim
10 words
Compounds as recited in claim 48 wherein R1 is chlorine.
Claim 59
Dependent Claim
10 words
Compounds as recited in claim 48 wherein X is chlorine.
References Cited (Backward Citations)
US2345690A
Cited
US2772308A
Cited
US2847458A
Cited
US3149137A
Cited
US3256370A
Cited
US3143569A
Cited
US3579576A
Cited
US3461189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |