Back to results
US 3,937,738 AGranted
(Perhaloalkyl) thio-substituted aldehydes and ketones
AssigneeMinnesota Mining and Manufacturing Company
InventorJames R. Throckmorton
Life of this patent
Estimating the term…
Abstract
Perhaloalkanesulfenyl chlorides are reacted with aldehydes and ketones to provide novel (perhaloalkyl)thio-substituted aldehydes and ketones which are useful organic solvents and intermediates. As intermediates, these compounds are especially useful in the preparation of their carbamate derivatives which have pesticical utility.
Claims5
A compound of the formula:
- ##EQU3## wherein R' is --CH.sub.3 or --CH.sub.2 SCF.sub.3 ;
- R.sup.2 and R.sup.3 are H or --CH.sub.3 ;
- and R.sup.4 is --CH.sub.3, CF.sub.3 S or CFCl.sub.2 S--, except that when R' is --CH.sub.3, R.sup.4 is not --CH.sub.3.
A process for the preparation of perhaloalkylthio-substituted ketones and aldehydes of the formula:
- ##EQU4## wherein R' if H, --CH.sub.3 or --CH.sub.2 SCF.sub.c ;
- R.sup.2 and R.sup.3 are H, --CH.sub.3 or together with the carbon atoms to which they are attached form a six-membered cycloaliphatic ring;
- and R.sup.4 is --CH.sub.3, CF.sub.3 S or CFCl.sub.2 S--, except that when R' is CH.sub.2 SCF.sub.3, R.sup.4 must be --CH.sub.3, and when R' is --CH.sub.3, R.sup.4 is not CH.sub.3, comprising reacting an aldehyde or ketone of the formula ##EQU5## with a perhaloalkanesulfenyl chloride selected from the group consisting of CF.sub.3 SCl and CFCl.sub.2 SCl in a solvent inert to the reactants, at a temperature of -78.degree. to 125.degree.C and in an inert atmosphere.
Dependencies are inferred from the claim text.