Process for the preparation of dihalobutyraldehydes
US5015780A · kind A · utility
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4References
10Claims
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Key dates
| Filing date | Jan 16, 1990 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Jan 16, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C45/65
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Dihalobutyraldehydes of formula I ##STR1## wherein X and Y are each independently of the other Cl or Br, are obtainable at high rates of conversion and with excellent selectivities by catalytic dehalogenation with hydrogen by carrying out the reaction with appropriate .alpha.,.alpha.-dihalobutyraldehydes in an organic aprotic solvent. The dihalobutyraldehydes are intermediates for the synthesis of herbicidal acyl cyclohexanediones.
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