Process for the preparation of aliphatic azo compounds using an amine coupling
US4546174A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1984 |
| Grant date | Oct 8, 1985 |
| Priority date | — |
| Expiry date | Feb 8, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is described a process for the production of a compound of formula I, ##STR1## in which at least one each of R.sub.1, R.sub.2 and R.sub.3, and of R.sub.4, R.sub.5 and R.sub.6, represents an electron withdrawing group, or one of R.sub.1, R.sub.2 and R.sub.3 together with one of R.sub.4, R.sub.5 and R.sub.6 form a --CO-- group, and the remainder of R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6, which may be the same or different, each represent an electron withdrawing group, alkyl, cycloalkyl, phenyl or phenylalkyl, PA0 or R.sub.1 and R.sub.2, or R.sub.4 and R.sub.5 , and R.sub.1 and R.sub.4, may together form a --(CH.sub.2).sub.n --chain, in which n is a whole number up to 5, PA0 the alkyl, cycloalkyl, phenyl or phenylalkyl group or the --(CH.sub.2).sub.n --chain optionally being substituted, which comprises reacting a compound of formula II, ##STR2## in which R.sub.1 a, R.sub.2 a and R.sub.3 a have the same significances as R.sub.1, R.sub.2, and R.sub.3 above, and some additional significances, PA0 with a compound of formula III, ##STR3## in which R.sub.4 a, R.sub.5 a and R.sub.6 a have the same significances as R.sub.4, R.sub.5 and R.sub.6 above, and some additiona…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.