catalytic reactions using transition metals is an important challenge in organic chemistry in which the intermediates are related to those produced in the classical cross-couplingreactions. As part of our research program devoted to the development of metal-catalyzed reactions using indium organometallics, a protocol for the C⁻H activation and C⁻C coupling of 2-arylpyridines with triorganoindium reagents
Palladium-Catalyzed Cross-Coupling Reactions of Allylic Halides and Acetates with Indium Organometallics
作者:David Rodríguez、José Pérez Sestelo、Luis A. Sarandeses
DOI:10.1021/jo0491511
日期:2004.11.1
The palladium(0)-catalyzed cross-coupling reaction of allylic halides and acetates with indium organometallics is reported. In this synthetic transformation, triorganoindiumcompounds and tetraorganoindates (aryl, alkenyl, and methyl) react with cinnamyl and geranyl halides and acetates to afford the SN2 product regioselectively and in good yield. The reaction proceeds with net inversion of the stereochemical
报道了钯(0)催化的烯丙基卤化物和乙酸酯与铟有机金属的交叉偶联反应。在该合成转化中,三有机铟化合物和四有机茚酸酯(芳基,烯基和甲基)与肉桂基和香叶基卤化物和乙酸酯反应,以区域选择性且高收率提供S N 2产物。反应随着立体化学构型的净转化而进行。
Chemo-, regio- and stereoselective addition of triorganoindium reagents to acetates of Baylis–Hillman adducts: a new strategy for the synthesis of (E)- and (Z)-trisubstituted alkenes
作者:Brindaban C. Ranu、Kalicharan Chattopadhyay、Ranjan Jana
DOI:10.1016/j.tetlet.2007.03.154
日期:2007.5
The addition of several trialkyl or triarylindium reagents to the acetates of Baylis–Hillmanadducts proceeds readily under the catalysis of copper and palladium derivatives. The reactions of trialkylindiums are catalyzed efficiently by CuI whereas additions of triarylindiums produce better results with Pd(PPh3)4. The reactions with 3-acetoxy-2-methylenealkanoates provide (E)-alkenes, whereas similar
Copper-Catalyzed Multicomponent Coupling of Organoindium Reagents with Nitrogen-Containing Aromatic Heterocycles
作者:Ramsay E. Beveridge、Daniel A. Black、Bruce A. Arndtsen
DOI:10.1002/ejoc.201000231
日期:2010.7
mild, copper-catalyzed coupling of organoindium reagents with nitrogen-containingaromaticheterocycles and chloroformates is described. This reaction proceeds with a range of organoindium reagents, yielding predominately or exclusively the 1,4-addition products with pyridine. In addition, a range of other nitrogen-containingheterocycles can be employed in this reaction (e.g. benzoxazole, benzothiazole
New Synthetic Applications of Indium Organometallics in Cross-Coupling Reactions
作者:José Pérez Sestelo、Luis A. Sarandeses、Miguel A. Pena
DOI:10.1055/s-2004-834945
日期:——
The use of indium organometallics in multifold and sequential cross-coupling reactions is reported. Triorganoindium reagents (R3In) react, under palladium catalysis, with oligohaloarenes affording the multiple cross-coupling products in a single operation. In the reaction, the three organic groups (alkyl, aryl, alkenyl or alkynyl) attached to indium are efficiently transferred to the electrophile, with only a slight excess of organometallic reagent. We demonstrate that indium organometallics are useful reagents for sequential cross-coupling reactions. This reaction illustrates the high chemoselectivity of R3In.