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 new furopyrans and angularly fused furopyranochromenes from 3-arylmethylidenefuran-2-ones
作者:T. V. Anis’kova、A. Yu. Egorova
DOI:10.1134/s1070428013100187
日期:2013.10
Reactions of 5-aryl-3-arylmethylidenefuran-2-ones with malononitrile gave 6-amino-2,4-diaryl-4Hfuro[2,3-b]pyran-5-carbonitriles and 2-aryl-5-imino-5H,11bH-furo[3',2': 5,6]pyrano[3,4-c]chromen-6-amines as potentially biologically active substances.
Synthesis of substituted 3,4-dihydrofuro[2,3-d]pyrimidines from 3-arylmethylidenefuran-2(3H)-ones
作者:T. V. Anis’kova、A. A. Verevochkin、A. Yu. Egorova
DOI:10.1134/s1070428016120290
日期:2016.12
Synthesis of Substituted Pyridazin-3-ones, 1,2-Oxazin-3-ones, and Furopyrimidines from (Arylmethylidene)furan-2(3H)-ones
作者:T. V. Anis’kova、A. Yu. Egorova
DOI:10.1134/s1070428018090208
日期:2018.9
Reactions of 5-substituted 3-(arylmethylidene)furan-2(3H)-ones with hydrazine hydrate, hydroxylamine, and guanidine involved opening of the furanone ring. Their hydrazinolysis under mild conditions afforded acyclic 4-oxoalkanoic acid hydrazides which underwent heterocyclization to substituted pyridazinones in boiling ethanol. The presence of an alkyl substituent in the 5-position of the initial furanone
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。