3-Pyrazolidinone derivatives
US4074051A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 29, 1973 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | Nov 29, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D231/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
3-Pyrazolidinone compounds having a solubility of at least 12 grams/liter in an aqueous medium of pH 9 of the formula: ##STR1## wherein R is a mononuclear phenyl group having substituents in the 3, 4, or 5 positions with a total of no more than 4 non-metallic atoms with an atomic number greater than 1 and the total mass of the substituents being less than that of benzene, PA1 Q is an aqueous-solubilizing group of the formula: ##STR2## wherein R.sup.1 and R.sup.2 are independently a hydrogen, or alkyl group or together with the included nitrogen form a 5 or 6 membered heterocyclic ring composed of carbon, nitrogen and no more than one atom from the group of sulfur and oxygen, the total number of atoms in R.sup.1 and R.sup.2 having an atomic number greater than 1 being equal to or less than 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.