High-speed vibration-milling-promoted synthesis of symmetrical frameworks containing two or three pyrrole units
作者:Marco Leonardi、Mercedes Villacampa、J Carlos Menéndez
DOI:10.3762/bjoc.13.190
日期:——
pseudo-five-component reaction between β-dicarbonyl compounds (2 molecules), diamines and α-iodoketones (2 molecules), prepared in situ from aryl ketones, was performed efficiently under mechanochemical conditions involving high-speed vibration milling with a single zirconium oxide ball. This reaction afforded symmetrical frameworks containingtwo pyrrole or fused pyrrole units joined by a spacer, which are
A catalyst-free and convenient approach for the preparation of cyclohexa-1,3-dienecarboxylate derivatives is described. This three-componentreaction between primary amines, alkyl acetoacetate, and dibenzylideneacetone proceeds under solvent-free condition in good to excellent yields. primary amines - alkyl acetoacetate - dibenzylideneacetone - cyclohexa-1,3-dienecarboxylate - solvent-free
Expedient, one-pot preparation of fused indoles via CAN-catalyzed three-component domino sequences and their transformation into polyheterocyclic compounds containing pyrrolo[1,2-a]azepine fragments
作者:Padmakar A. Suryavanshi、Vellaisamy Sridharan、J. Carlos Menéndez
DOI:10.1039/c004703a
日期:——
The CAN-catalyzed three-component between reaction between primary amines, β-dicarbonyl compounds and naphthoquinones or 2-bromonaphthoquinones afforded, respectively, 5-hydroxybenzo[g]indoles and benzo[f]indole-4,9-diones, the former of which were transformed into tetracyclic azepino[1,2-a]benzo[g]indole systems through a γ-alkylation/ring-closing metathesis sequence.
这 能够伯胺之间的反应之间催化的三组分, β-二羰基化合物和萘醌或2-溴萘醌分别提供了5-羟基苯并[ g ]吲哚和苯并[ f ]吲哚-4,9-二酮,它们的前者转化为四环氮杂[1,2- a ]苯并[ g ]吲哚 系统通过γ-烷基化/闭环复分解序列。
Three-component access to 2-pyrrolin-5-ones and their use in target-oriented and diversity-oriented synthesis
作者:Ángel Cores、Verónica Estévez、Mercedes Villacampa、J. Carlos Menéndez
DOI:10.1039/c6ra06317a
日期:——
The Hantzsch-type microwave-assisted, solvent-free sequential three-component reaction between primary amines, [small beta]-dicarbonyl compounds and [small alpha]-bromoesters in the presence of indium trichloride afforded 2-pyrrolin-5-ones, which are difficult to access by alternative methods....