GB737012A - Substituted 5-pyrazolones - Google Patents
Substituted 5-pyrazolonesInfo
- Publication number
- GB737012A GB737012A GB2649/53A GB264953A GB737012A GB 737012 A GB737012 A GB 737012A GB 2649/53 A GB2649/53 A GB 2649/53A GB 264953 A GB264953 A GB 264953A GB 737012 A GB737012 A GB 737012A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pyrazolone
- phenyl
- methyl
- nitrophenyl
- acetyl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B29/00—Monoazo dyes prepared by diazotising and coupling
- C09B29/34—Monoazo dyes prepared by diazotising and coupling from other coupling components
- C09B29/36—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds
- C09B29/3604—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom
- C09B29/3647—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms
- C09B29/3652—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles
- C09B29/366—Monoazo dyes prepared by diazotising and coupling from other coupling components from heterocyclic compounds containing only a nitrogen as heteroatom containing a five-membered ring with two nitrogen atoms as heteroatoms containing a 1,2-diazoles or hydrogenated 1,2-diazoles containing hydroxy-1,2-diazoles, e.g. pyrazolone
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
4-Arylazo-5-pyrazolones are prepared by reacting an aryldiazonium halide with either a 4-acyl-5-pyrazolone, a 5-acyloxypyrazole, or a 4-acyl-5-acyloxypyrazole, or a mixture of two or more of these three types of compound, (see Group IV (b)). In examples: (1) benzenediazonium chloride is added to a solution in pyridine of 1-phenyl-3-methyl-5-acetoxy-pyrazole, 1 - phenyl - 3 - methyl - 4 - acetyl - 5-acetoxy - pyrazole, or 1 - phenyl - 3 - methyl-4-acetyl-5-pyrazolone; or (2) 1-p-cyanophenyl-3 - benzamido - 5 - benzoxy - pyrazole. Also in examples: (3) 2,5-dichlorbenzene diazonium chloride is added to a pyridine solution of 1-(p-nitrophenyl) - 3 - methyl - 4 - acetyl - 5-pyrazolone or 1 - (p - nitrophenyl) - 3 - methyl-5-acetoxypyrazole; (4) 2-chlorobenzenediazonium chloride is added to a pyridine solution of 1 - phenyl - 3 - (21,41 - di - tert. - amylphenoxyacetamido) - 4 - (211,411 - di - tert. - amylphenoxyacetyl)-5-pyrazolone. Specifications 598,175 and 599,377, [Group XX], are referred to.ALSO:1 - Phenyl or p - nitrophenyl - 3 - methyl - 5 - acetoxypyrazol is prepared by the action of acetic anhydride on 1-phenyl or p-nitrophenyl-3-methyl-5-pyrazolone. 1 - Phenyl or - p - nitrophenyl - 3 - methyl - 4 - acetyl - 5 - pyrazolone and 1 - phenyl - 3 - methyl - 4 - acetyl - 5 - acetoxy - pyrazole are prepared by the action of acetic anhydride and sodium acetate on 1-phenyl-3-methyl-5-pyrazolone. 1 - (p - Cyanophenyl) - 3 - benzamido - 5 - benzoxypyrazole is prepared by treating 1-(p-cyanophenyl) - 3 - amino - 5 - pyrazolone with benzoyl chloride in pyridine. On hydrolysis with alcoholic caustic potash it gives 1-(p-cyanophenyl)-3-benzamido-5-pyrazolone. 1 - Phenyl - 3 - (21.41 - di - tert. - amylphenoxyacetamido) - 5 - pyrazolone and 1 - phenyl - 3 - (21,41\h - di - tert. - amylphenoxyacetamido) - 4 - (211,411 di - tert. - amylphenoxyacetyl) - 5 - pyrazolone are obtained by acylation of 1 - phenyl - 3 - amino - 5 - pyrazolone. Specifications 598,175 and 599,377, [Group XX], are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US737012XA | 1952-01-31 | 1952-01-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB737012A true GB737012A (en) | 1955-09-21 |
Family
ID=22115260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2649/53A Expired GB737012A (en) | 1952-01-31 | 1953-01-29 | Substituted 5-pyrazolones |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB737012A (en) |
-
1953
- 1953-01-29 GB GB2649/53A patent/GB737012A/en not_active Expired
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