Catalytic cycle for production of 1,1-disubstituted alkenes
AssigneeSirrus, Inc.
InventorsJeffrey M. Sullivan, Ami Doshi, Kshitij Kishen Parab
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Abstract
The present teachings disclose contacting an amine salt catalyst with a dicarbonyl compound having an alkylene group between the carbonyl group; adding formaldehyde, paraformaldehyde, or formalin in an amount of about 2:1 to about 3:1 moles of formaldehyde to moles of the dicarbonyl compound to form a mixture; and refluxing the mixture. The process forms a carbonyl-substituted alkene. The process may be performed in the absence of a solvent. The process may form methylene malonates, methylene dimalonates, methylene keto malonamides, methylene diketones, methylene keto esters, and the like.
Claims22
A process comprising:
- a) contacting an acid amine salt catalyst with a diester or ketoester compound having an alkylene group between the carbonyl groups;
- b) adding formaldehyde, paraformaldehyde, formalin or trioxane in an amount of 2:1 to 3:1 moles of formaldehyde to moles of the compound to form a mixture;
- and
- c) heating the mixture in the absence of a solvent;
- wherein the process forms a diester or ketoester substituted alkene.
Dependencies are inferred from the claim text.