2,3,5-Trialkyl-4-hydroxybenzylphosphonates and phosphinates
US3962377A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 26, 1974 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Jul 26, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The compounds are trialkylsubstituted hydroxybenzylphosphonates and phosphinates having the formula ##SPC1## Wherein R, R.sup.1 and R.sup.2 are independently lower alkyl or cycloalkyl groups, R.sup.3 is alkyl, alkyl substituted with one halogen atom, phenyl, phenyl substituted with alkyl groups, alkoxy, alkoxy substituted with one halogen group, phenoxy, phenoxy substituted with alkyl groups, alkylthioethoxy, alkylpolyoxyalkylenoxy, R.sup.4 is alkyl, alkylsubstituted with one halogen atom, cycloalkyl, phenyl, phenyl substituted with alkyl groups alkylthioethyl, thiobis-alkylene, alkyleneoxyalkylene, polyoxyalkylene, alkylpolyoxyalkylene, alkylene, polyvalent cyclic or acyclic hydrocarbon radical, R.sup. 5 and R.sup. 6 are independently hydrogen, alkyl of 1 to 12 carbon atoms, R.sup.6 may also be the group Ic ##SPC2## Or together R.sup.5 and R.sup.6 represent the group Id ##SPC3## R.sup.7 is hydrogen, alkyl or phenyl, A is lower alkylene and n is 1 to 4. These compounds are usually prepared by reacting the trialkylsubstituted hydroxybenzyl or hydroxyphenylalkyl halide with the appropriate trialkyl or triaryl phosphite or appropriate substituted phosphonite. The compounds are useful …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.