Synthesis of 2-substituted 1,3-oxazin-6-ones by gas-phase pyrolysis
作者:Hamish McNab、Kirsti Withell
DOI:10.1016/0040-4020(95)01102-1
日期:1996.2
Acylaminomethylene Meldrum'sacidderivatives 5 are prepared either by direct reaction of methoxymethylene Meldrum'sacid 4 with primary amides, or by acylation of aminomethyleneMeldrum'sacid 6. Pyrolysis of the substrates 5 under FVP conditions gives the title compounds 8 in good yields.