5-取代的3-(芳基亚甲基)呋喃-2(3 H)-酮与水合肼,羟胺和胍的反应涉及呋喃酮环的打开。它们在温和条件下的肼分解作用提供了无环的4-氧代链烷酸酰肼,它们在沸腾的乙醇中杂环化成取代的哒嗪酮。在初始呋喃酮的5-位上烷基取代基的存在有利于杂环化并形成吡唑烷酮衍生物。3-(芳基亚甲基)呋喃-2(3 H)-one与羟胺和胍的反应也产生了新的六元杂环,2 H -1,2-恶嗪-3(4 H)-one和4,6-双取代的3,4-二氢呋喃[2,3- d ]嘧啶-2-胺。
Reactions of 3-arylmethylene-3<i>H</i>-furan(pyrrol)-2-ones with azomethine ylide: synthesis of substituted azaspirononenes
作者:Irina E. Kamneva、Aleksandr A. Verevochkin、Mariya A. Zheleznova、Alevtina Y. Yegorova
DOI:10.1515/hc-2016-0124
日期:2016.10.1
Abstract
The reaction of arylmethylene derivatives of 3H-furan-2-ones or 3H-pyrrol-2-ones with N-benzylidenebenzylamine activated with the AcOAg/Et3N system to form spiropyrrolidynes was carried out for the first time.
5-R-3-arylmethylidenefuran-2(3H)-ones route of reaction with guanidine carbonate and leads to 3-[(2-amino-4-(2-hydroxyphenyl)pyrimidin-5-yl)methylene]-5-phenylfuran-2(3H)-ones (2a-d). The structure of the reaction products depends on the nature of the aromatic substituent at the C-3 position of the furanone ring. The interaction of 5-aryl-3-arylmethylidenefuran-2(3H)-ones (1e-h) with thiourea in the
Synthesis of 6-amino-4-aryl- 2R-4H-furo[2,3-b]pyran-5-carbo- nitriles based on the condensation of 3-arylmethylene-3H-furan-2-ones with malononitrile
作者:T. V. Aniskova、A. Yu. Yegorova
DOI:10.1007/s10593-009-0335-2
日期:2009.6
Methods were developed for the synthesis of 6-amino-4-aryl-2R-4H-furo[2,3-b]pyran-5-carbonitriles based on the reaction of 3-arylmethylene-3H-furan-2-ones with malononitrile and also using a multicomponent reaction. The reaction schemes are discussed.
Arylmethylidene derivatives of furan-2(3H)-ones in the synthesis of furopyridinecarbonitriles
作者:T. V. Anis’kova、A. Yu. Egorova
DOI:10.1134/s1070428012120172
日期:2012.12
Reaction of 5-aryl-3H-furan-2-ones and their 3-arylmethylidene derivatives with thiosemicarbazide