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US4774366A
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Synthesis of geminal dinitro compounds
Assignee: United States Department of the Air Force
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Filing: 1986-02-24
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Granted: 1988-09-27
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Expires: 2006-02-24
Abstract
Abstract Geminal dinitro compounds are prepared by reacting an organic nitro compound having a replaceable hydrogen on the carbon to which the nitro group is attached with a source of nitrite ions in the presence of an oxidizing agent and a catalytic amount of an alkali metal ferricyanide.
Inventors
- 👤 Vytautas Grakauskas
- 👤 Lee C. Garver
- 👤 Kurt Baum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:30
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; C07C; C07C201/00; C07C201/06; C07C201/08; C07C205/00; C07C205/01; C07C205/02; C07C205/13; C07C205/14; C07C205/15; C07C205/27; C07C205/28; C07C205/29; C07C205/44; C07C205/49; C07C205/50; C07C205/51; C07D305/00; C07D305/02; C07D305/04; C07D305/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
143 words
A process for producing a hydroxy, geminal dinitro compound which comprises reacting an organic nitro compound having a replaceable hydrogen atom attached to the carbon atom to which the nitro group is attached with a C1 to C5 aliphatic aldehyde, and thereafter reacting the resulting nitro-alcohol with a nitrite salt selected from the group consisting of alkali metal nitrites and alkaline earth metal nitrites in the presence of an alkali metal persulfate and about 0.05 to 0.50 moles of an alkali metal ferricyanide per mole of said organic nitro compound, wherein said nitro compound has the general formula ##STR6## wherein R and R' are selected from group consisting of hydrogen, C1 to C4 alkyl, C2 to C6 alkyl ether, C2 to C4 carboxylic acid, C3 to C6 carboxylic acid ester, C6 to C9 cycloalkyl, C7 to C9 aralkyl and C7 to C9 alkaryl.
Claim 2
Dependent Claim
143 words
A process for producing a hydroxy, geminal dinitro compound which comprises reacting an organic nitro compound having a replaceable hydrogen atom attached to the carbon atom to which the nitro group is attached with a C1 to C5 aliphatic aldehyde, and thereafter reacting the resulting nitro-alcohol with a nitrite salt selected from the group consisting of alkali metal nitrites and alkaline earth metal nitrites in the presence of an alkali metal persulfate and about 0.05 to 0.50 moles of an alkali metal ferricyanide per mole of said organic nitro compound, wherein said nitro compound has the general formula ##STR6## wherein R and R' are selected from group consisting of hydrogen, C1 to C4 alkyl, C2 to C6 alkyl ether, C2 to C4 carboxylic acid, C3 to C6 carboxylic acid ester, C6 to C9 cycloalkyl, C7 to C9 aralkyl and C7 to C9 alkaryl.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein said nitro compound is nitroethane and said aldehyde is formaldehyde.
Claim 4
Dependent Claim
16 words
The process of claim 1 wherein said nitro compound is nitromethane and said aldehyde is formaldehyde.
Claim 5
Dependent Claim
139 words
A process for producing a hydroxy, geminal dinitro compound which comprises reacting an organic nitro compound having a replaceable hydrogen atom attached to the carbon atom to which the nitro group is attached with a nitrite salt selected from the group consisting of alkali metal nitrites in the presence of an alkali metal persulfate and about 0.05 to 0.50 moles of an alkali metal ferricyanide per mole of said organic nitro compound, and thereafter reacting the resulting dinitro compound with a C1 to C5 aliphatic aldehyde, wherein said nitro compound has the general formula ##STR7## wherein R and R' are selected from group consisting of hydrogen, C1 to C4 alkyl, C2 to C6 alkyl ether, C2 to C4 carboxylic acid, C3 to C6 carboxylic acid ester, C6 to C9 cycloalkyl, C7 to C9 aralkyl and C7 to C9 alkaryl.
Claim 6
Dependent Claim
139 words
A process for producing a hydroxy, geminal dinitro compound which comprises reacting an organic nitro compound having a replaceable hydrogen atom attached to the carbon atom to which the nitro group is attached with a nitrite salt selected from the group consisting of alkali metal nitrites in the presence of an alkali metal persulfate and about 0.05 to 0.50 moles of an alkali metal ferricyanide per mole of said organic nitro compound, and thereafter reacting the resulting dinitro compound with a C1 to C5 aliphatic aldehyde, wherein said nitro compound has the general formula ##STR7## wherein R and R' are selected from group consisting of hydrogen, C1 to C4 alkyl, C2 to C6 alkyl ether, C2 to C4 carboxylic acid, C3 to C6 carboxylic acid ester, C6 to C9 cycloalkyl, C7 to C9 aralkyl and C7 to C9 alkaryl.
Claim 7
Dependent Claim
16 words
The processing of claim 4 wherein said nitro compound is nitromethane and said aldehyde is formaldehyde.
References Cited (Backward Citations)
CA650551A
Cited
US2997504A
Cited
US3024288A
Cited
US3020319A
Cited
GB1011115A
Cited
US3560575A
Cited
US3531534A
Cited
US4233250A
Cited
US4594430A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-27 | 1992-03-28 | 1992-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-27 | 1996-03-28 | 1996-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-27 | 2000-03-28 | 2000-09-27 | $7700.00 | Window Closed / Lapsed |