[3,2-a]pyrimidin-5-one (2) is obtained by cyclocondensation of 2-aminothiazole with ethyl 4-chloroacetoacetate. This product was shown to react with various nitronate or malonate anions undermicrowaveirradiation to give potentially bioactive 6-nitro-5H-thiazolo[3,2-a]pyrimidin-5-ones. Extension to other anions centered on S atom allows for the generalization this synthetic procedure.
通过2-氨基噻唑与4-氯乙酰乙酸乙酯的环缩合反应,得到7-氯甲基-6-硝基-5 H-噻唑并[3,2 - a ]嘧啶-5-酮(2)。该产物显示在微波辐射下与各种硝酸根或丙二酸根阴离子反应,可产生具有生物活性的6-硝基-5 H-噻唑并[3,2 - a ]嘧啶-5-酮。扩展到以S原子为中心的其他阴离子可以推广这种合成方法。
Palladium-catalysed substitution reactions of geminal allylic diacetates
作者:Fanie R. van Heerden、Johan J. Huyser、D. Bradley、G. Williams、Cedric W. Holzapfel
DOI:10.1016/s0040-4039(98)01000-4
日期:1998.7
The Pd(0)-catalysed substitution of allylic 1,1-diacetates by both carbon and oxygen nucleophiles is described. The products isolated resulted from either single or double substitution reactions.
Fluoronitroaliphatics. III. Preparation of some negatively substituted halonitromethanes
作者:Horst G. Adolph、Robert E. Oesterling、Michael E. Sitzmann
DOI:10.1021/jo01275a073
日期:1968.11
Carbanion fluorination with xenon difluoride in the presence of sulfur (II) derivatives
作者:Timothy B. Patrick、Sourena Nadji
DOI:10.1016/s0022-1139(00)81611-5
日期:1988.6
An electrophilic fluorination reagent capable of fluorinatingcarbanions in moderate yield is obtained from the reaction of xenon difluoride with Sulfur II derivatives such as dimethyl sulfide.