Process for the preparation of 1-oxa-3,8-diaza-4-oxo-spiro...

Details Process for the preparation of 1-oxa-3,8-diaza-4-oxo-spiro... Process for the preparation of 1-oxa-3,8-diaza-4-oxo-spiro...

C - Chemistry, Metallurgy

07

D

260/278

C07D 498/10 (2006.01) C07D 498/20 (2006.01) C07D 519/00 (2006.01)

Patent

CA 1285947

ABSTRACT OF THE DISCLOSURE: The reaction for the preparation of 1-oxa-3,8-diaza-4- oxo-spiro[4.5]decane compounds of the formula Image proceeds more rapidly and more completely if it is per- formed in the presence of a phase transfer catalyst in an aromatic hydrocarbon which is liquid at room tempera- ture.

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