Processes for the preparation of oxo-oxazoline or alloamino...

Details Processes for the preparation of oxo-oxazoline or alloamino... Processes for the preparation of oxo-oxazoline or alloamino...

C - Chemistry, Metallurgy

07

D

C07D 263/20 (2006.01) C07C 227/32 (2006.01) C07D 263/26 (2006.01) C07K 5/06 (2006.01) C07K 5/078 (2006.01) C07K 5/097 (2006.01) C07C 229/22 (2006.01)

Patent

CA 2383300

A process for the preparation of compounds of general formula (I-A) or (I-B) which comprises the reaction step (A) or (B) (wherein R1 is optionally substituted lower alkyl or the like; R2 is lower alkyl, optionally substituted aralkyl, or the like; and R3 is lower alkyl), characterized by treating a compound of general formula (II-A) or (II-B) with thionyl chloride.

L'invention concerne un procédé de préparation de composés correspondant à la formule générale (I-A) ou (I-B) dans laquelle R?1¿ représente alkyle inférieur éventuellement substitué, ou analogue, R?2¿ représente alkyle inférieur, aralkyle éventuellement substitué, ou analogue et R?3¿ représente alkyle inférieur. Ce procédé comprend l'étape de réaction (A) ou (B) consistant à traiter un composé correspondant à la formule générale (II-A) ou (II-B) avec du chlorure de thionyle.

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