[EN] NOVEL COMPOUNDS USEFUL AS POTENTIAL INSECT ANTIFEEDANT AND A PROCESS FOR THE PREPARATION THEREOF [FR] NOUVEAUX COMPOSÉS UTILES COMME ANOREXIGÈNE POTENTIEL POUR INSECTES ET PROCÉDÉ DE PRÉPARATION ASSOCIÉ
A Novel Procedure for the Synthesis of Benzo[b][1,8]naphthyridine-3-carboxylate Derivatives from Morita-Baylis-Hillman Adduct Acetates
作者:Weike Su、Weihui Zhong、Fuliang Lin、Ren’er Chen
DOI:10.1055/s-0029-1216853
日期:2009.7
8]naphthyridine-3-carboxylate derivatives from the reaction of Morita-Baylis-Hillman adductacetates with primary amines, ammonium acetate or benzenesulfonamides. The approach, which involves readily available starting materials and mild reaction conditions, gives excellent yields after a convenient workup procedure. benzo[b][1,8]naphthyridine-3-carboxylate - Morita-Baylis-Hillman adductacetates - primary amines
从Morita-Baylis-Hillman加成乙酸酯与伯胺,乙酸铵或苯磺酰胺的反应中,设计了一种新颖的方法来制备苯并[ b ] [1,8]萘啶-3-羧酸酯衍生物。该方法涉及容易获得的起始原料和温和的反应条件,在方便的后处理步骤后可获得优异的产率。 苯并[ b ] [1,8]萘啶-3-羧酸盐-Morita-Baylis-Hillman加合物乙酸盐-伯胺-乙酸铵-苯磺酰胺
Active methylene compounds (AMCs) controlled facile synthesis of acridine and phenanthridine from morita Baylis–Hillman acetate
作者:Tanu Gupta、Jay Bahadur Singh、Kalpana Mishra、Radhey M. Singh
DOI:10.1039/c7ra09447g
日期:——
We carried out simple and facile syntheses of acridines and phenanthridines from MBH acetates of 2-chloro-quinoline-3-carbaldehydes with active methylene compounds (AMCs). Formation of products was found to be dependent on the functional group of the AMC. For example, ethylcyanoacetate and malononitrile favoured the formation of acridines and cyanoacetamide, and ethyl nitroacetate and malonic esters
我们从2-氯喹啉-3-甲醛与活性亚甲基化合物(AMCs)的MBH乙酸酯进行了简单,简便的of啶和菲啶的合成。发现产物的形成取决于AMC的官能团。例如,氰基乙酸乙酯和丙二腈有利于形成cr啶和氰基乙酰胺,而硝基乙酸乙酯和丙二酸酯则有利于形成有角度融合的菲啶。导致菲啶形成的反应通过S N 2'中间体的单键旋转进行,这归因于AMCs官能团和喹啉氮之间的电子/空间排斥。
Palladium-Catalyzed Reaction of MBH Acetates and Terminal Alkynes: Cascade Synthesis of Phenanthridine and 6-Arylethynylphenanthridine
作者:Tanu Gupta、Jay Bahadur Singh、Rashmi Singh、Radhey M. Singh
DOI:10.1002/ejoc.201800725
日期:2018.8.23
A palladium‐catalyzed cascadereaction of Morita–Baylis–Hillman (MBH) acetates and terminal alkynes was developed. This regioselective synthetic approach is temperature controlled and favors the formation of phenanthridines when conducted at a lower temperature and 6‐arylethynylphenanthridines when performed at a higher temperature.
Cascade S<sub>N</sub>2′-S<sub>N</sub>Ar, Elimination, and 1,5-Hydride Shift Reactions by Acetylacetone/Acetoacetic Esters: Synthesis of 9,10-Dihydroacridines
作者:Tanu Gupta、Kishor Chandra Bharadwaj、Radhey M. Singh
DOI:10.1002/ejoc.201600911
日期:2016.10
A reaction involving the use of acetylacetone/methyl acetoacetate and Morita–Baylis–Hillmanacetates for the efficient, one-pot, metal-free synthesis of 9,10-dihydroacridines at room temperature was developed. The cascade of reactions involved sequential SN2′–SNAr reactions, elimination, and reduction through ketene generation and hydride transfer. Evidence for hydride shift via a ketene intermediate