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US 4,393,218 AGranted
2,2,4,5,5-Pentamethyl-3-formyl-.DELTA..sup.3 -pyrroline and the preparation thereof
AssigneeAnic S.p.A.
InventorsSilvestro Costanzi, Francesco Tessarolo, Maurizio Brunelli
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Abstract
A process for preparing 2,2-dialkyl-4-methyl-5,5-dialkyl-3-formyl-.DELTA..sup.3 -pyrrolines by reacting the corresponding dialkyl substituted di-tert-propargylamines with water at a pH equal to or less than 3.0. Preferably, an inorganic mercury compound is used as a catalyst.
Claims3
The compound, 2,2,4,5,5-pentamethyl-3-formyl-.DELTA..sup.3 -pyrroline.
Dependencies are inferred from the claim text.