Palladium-catalysed coupling of aryl and vinyl triflates or halides with 2-ethynylaniline: An efficient route to functionalized 2-substituted indoles
作者:A. Arcadi、S. Cacchi、F. Marinelli
DOI:10.1016/s0040-4039(01)80456-1
日期:1989.1
vinyl triflates or halides with the easily available 2-ethynylaniline, followed by a palladium(II)-catalysed cyclization step, provides an efficient and very versatile procedure for the synthesis of functionalyzed 2-substitutedindoles.
The palladium-catalysed synthesis of 2,3,5-trisubstituted furans from 2-propargyl-1,3-dicarbonyl compounds and vinylic or aryl triflates or halides.
作者:Antonio Arcadi、Sandro Cacchi、Richard C. Larock、Fabio Marinelli
DOI:10.1016/s0040-4039(00)73569-6
日期:1993.4
The palladium-catalysed cyclization of 2-propargyl-1,3-dicarbonyl compounds with vinylic or aryl triflates or halides in the presence of potassium carbonate produces 2,3,5-trisubstituted furans in good yield.
The palladium-catalysed vinylic substitution of vinyl triflates with β-substituted-α,β-unsaturated carbonyl compounds. An application to the synthesis of cardenolides
作者:Antonio Arcadi、Sandro Cacchi、Giancarlo Fabrizi、Fabio Marinelli、Paola Pace
DOI:10.1016/0040-4020(96)00303-1
日期:1996.5
Vinyl triflates react with β-substituted-α,β-unsaturated aldehydes, ketones, and esters in the presence of catalytic amounts of Pd(OAc)2 and an exeess of KOAc, omitting phosphine ligands, to give vinylic substitution products in good to high yield with high regioselectivity. The added vinyl unit is preferentially linked to the β-carbon atom. As to the stereochemistry, vinylic substitution products
Indole[1,2-c]quinazolines by Palladium-Catalyzed Cyclization of Bis(o-trifluoroacetamidophenyl) acetylene with Aryl and Vinyl Halides or Triflates
作者:Antonio Arcadi、Sandro Cacchi、Alberto Cassetta、Giancarlo Fabrizi、Luca M. Parisi
DOI:10.1055/s-2001-17458
日期:——
6-Trifluoromethyl-12-aryl(vinyl)indolo[1,2-c]quinazolines are prepared in high yield through the palladium-catalyzed reaction of readily available bis(o-trifluoroacetamidophenyl)acetylene with aryl or vinylhalides and triflates, followed by cyclization of the resultant derivatives. The reaction, which tolerates a variety of important functional groups, probably involves the formation of a 3-aryl-
6-三氟甲基-12-芳基(乙烯基)吲哚并[1,2-c]喹唑啉是通过容易获得的双(邻三氟乙酰氨基苯基)乙炔与芳基或乙烯基卤化物和三氟甲磺酸酯的钯催化反应以高收率制备的,然后是所得衍生物的环化。该反应可以耐受各种重要的官能团,可能涉及形成 3-芳基-2-(邻三氟乙酰氨基苯基)吲哚中间体,然后环化为吲哚喹唑啉产物。吲哚喹唑啉核的形成已通过 X 射线分析明确确定。
Highly substituted furans from 2-propynyl-1,3-dicarbonyls and organic halides or triflates via the oxypalladation-reductive elimination domino reaction
作者:Antonio Arcadi、Sandro Cacchi、Giancarlo Fabrizi、Fabio Marinelli、Luca M Parisi
DOI:10.1016/s0040-4020(03)00588-x
日期:2003.6
an efficient straightforward entry into highly substituted furans. The best results have been obtained by using an excess of the alkyne. The process can tolerate a wide variety of important functional groups both on the alkyne and the organic halide or triflate. Under an atmosphere of carbonmonoxide, the reaction affords furan derivatives incorporating carbonmonoxide. Depending on the alkyne to organic