Synthesis of N-methyl-N-phenylaminoacrolein

Details Synthesis of N-methyl-N-phenylaminoacrolein Synthesis of N-methyl-N-phenylaminoacrolein

2006-08-15

2006-08-15

Barts, Samuel (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

Reexamination Certificate

active

07091382

ABSTRACT:
A process is disclosed for manufacturing N-methyl-N-phenylaminoacrolein of formula (I)which comprises reacting N-methylformanilide and an alkyl vinyl ether of formula (III)wherein R is a C3–C4alkyl, said process being characterized in that the reaction between N-methylformanilide and said alkyl vinyl ether of formula (III) is carried out in the presence of phosgene, diphosgene or triphosgene in a solvent selected from dioxane, acetonitrile and/or chlorobenzene.

REFERENCES:
patent: 5118853 (1992-06-01), Lee et al.
patent: 945 536 (1964-01-01), None
George T. Lee et al., “Vinylformylation Utilizing Propeniminium Salts”, Journal of Organic Chemistry, vol. 57, No. 11, 1992, pp. 3250-3252.

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