Preparation of 3-chloromethyl-4-alkyl-nitrobenzene by chloromethylation
US4395577A · kind A · utility
2Cited by
1References
3Claims
0Family size
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Key dates
| Filing date | Oct 22, 1981 |
| Grant date | Jul 26, 1983 |
| Priority date | — |
| Expiry date | Oct 22, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C201/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for the preparation of 3-chloromethyl derivatives of 4-alkylnitrobenzenes from the corresponding amidomethyl derivatives with phosphorus oxychloride or with phosphorous oxychloride and inert solvents. This process also relates to 3-chloromethyl-4-alkylnitrobenzenes which are useful intermediates for the preparation of certain substituted 2,6-dinitroaniline pre-emergence herbicides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.