Process to 5-methyleneoxazolines

Details Process to 5-methyleneoxazolines Process to 5-methyleneoxazolines

C - Chemistry, Metallurgy

07

D

C07D 263/32 (2006.01) C07C 231/10 (2006.01) C07C 231/14 (2006.01) C07C 233/31 (2006.01) C07C 233/76 (2006.01) C07C 235/46 (2006.01) C07C 253/30 (2006.01) C07C 255/57 (2006.01) C07D 213/82 (2006.01) C07D 263/52 (2006.01) C07D 413/04 (2006.01)

Patent

CA 2237285

This invention provides a process for the preparation of a 5-methylene-1,3-oxazoline from an alkyl ketone by reacting the alkyl ketone with an acetylating agent and an acid catalyst in an appropriate solvent and at an appropriate temperature. The resulting 5-methylene-1,3-oxazoline can be chlorinated and subsequently hydrolyzed to form an .alpha.-chloroketone which is useful as a fungicide.

L'invention porte sur une méthode pour préparer une 5-méthylène-1,3-oxazoline à partir d'une alkylcétone par réaction de l'alkylcétone avec un agent d'acétylation, en présence d'un catalyseur acide, dans un solvant et à une température appropriés. La 5-méthylène-1,3-oxazoline résultante peut être chlorée et ultérieurement hydrolysée pour former une alpha-chlorocétone, utile comme fongicide.

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