从容易获得的甲基酮,丙二腈,溴和碱金属乙酸盐开始,报道了一种以高收率和优良纯度合成2-酰基-1,1,1,3,3-四氰基丙烯盐(ATCN)盐的新颖途径。新型DMSO–NaBr–H 2 SO 4将起始的芳基(杂芳基)甲基酮氧化为相应的α-酮醛在8-10分钟的短时间内,氧化系统的收率高达90%。根据“绿色化学”的原则5,ATCN的后续制备过程可在水性介质中完成,无需使用任何有毒溶剂。通过X射线衍射分析表征2-苯甲酰基-1,1,3,3-四氰基丙烯腈中的锂,钠,钾,和铯。这些盐显示出合成五元和六元杂环的良好潜力,并且可以在配位和超分子化学中用作潜在有用的配体。
Mechanochemical Aza-Vinylogous Povarov Reactions for the Synthesis of Highly Functionalized 1,2,3,4-Tetrahydroquinolines and 1,2,3,4-Tetrahydro-1,5-Naphthyridines
作者:José Clerigué、M. Teresa Ramos、J. Carlos Menéndez
DOI:10.3390/molecules26051330
日期:——
performed on a vibratory ball mill operating at 20 Hz and using zirconium oxide balls and milling jar, and afforded 1,2,3,4-tetrahydroquinolines and 1,2,3,4-tetrahydro- 1,5-naphthyridines functionalized at C-2, C-4 and also at C-6, in the latter case. This protocol generally afforded the target compounds in good to excellent yields and diastereoselectivities. A comparison of representative examples
作者:Mathias Paul、Martin Breugst、Jörg-Martin Neudörfl、Raghavan B. Sunoj、Albrecht Berkessel
DOI:10.1021/jacs.5b13236
日期:2016.4.20
that saturated bis-Dipp/Mes imidazolidinylidenes readily form isolable, though reactive diamino enols with aldehydes and enals. In contrast, triazolylidenes, upon stoichiometric reaction with aldehydes, gave exclusively the keto tautomer, and no isolable enol. Herein, we present the synthesis of the "missing" keto tautomers of imidazolidinylidene-derived diamino enols, and computational thermodynamic
[3+2]-annulation reaction in the presence of a base. Compounds 6 were easily converted to 2-substituted cyclopent-2-en-1-ones by deethoxycarbonylation. An application of the annulation to synthesis of cis-jasmone is also described.
[EN] COMPOUNDS AND METHODS FOR THE PRODUCTION OF LONG CHAIN HYDROCARBONS FROM BIOLOGICAL SOURCES<br/>[FR] COMPOSÉS ET PROCÉDÉS DE PRODUCTION D'HYDROCARBURES À CHAÎNE LONGUE À PARTIR DE SOURCES BIOLOGIQUES
申请人:LOS ALAMOS NAT SECURITY LLC
公开号:WO2013040311A1
公开(公告)日:2013-03-21
The present invention is directed to the preparation of oxygenated, unsaturated hydrocarbon compounds, such as derivatives of furfural or hydroxymethyl furfural produced by aldol condensation with a ketone or a ketoester, as well as methods of deoxidatively reducing those compounds with hydrogen under acidic conditions to provide saturated hydrocarbons useful as fuels.
p-TSA-catalyzed facile and efficient one-pot eco-friendly synthesis of novel isoxazolyl amino furo[3,2-c]quinolinone derivatives in aqueous medium
作者:Nagi Reddy Modugu、Praveen Kumar Pittala
DOI:10.1016/j.tetlet.2017.08.062
日期:2017.10
operationally simple approach for the synthesis of novel isoxazolyl amino furo[3,2-c]quinolinone derivatives by a one-pot three-component reaction of 4-amino-3-methyl-5 styrylisoxazoles, aryl glyoxal monohydrates and 4-hydroxy-1-methyl-2-quinolinone using p-TSA as the catalyst in aqueous medium was developed. The protocol proves to be an efficient and an environmentallybenign in terms of high yields, operational
通过4-氨基-3-甲基-5苯乙烯基恶唑,芳基乙二醛一水合物和4-水的一锅三组分反应合成新型异恶唑基氨基呋喃[3,2- c ]喹啉酮衍生物的绿色且操作简单的方法以p -TSA为催化剂,在水性介质中开发了羟基-1-甲基-2-喹啉酮。从高产率,操作简便,反应简捷,与各种底物的相容性,水作为溶剂和易于纯化等方面来看,该协议被证明是一种有效且对环境无害的方法。