3958-47-2Relevant articles and documents
Reactivity studies of group 15 Zintl ions towards homoleptic post-transition metal organometallics: A 'bottom-up' approach to bimetallic molecular clusters
Knapp, Caroline,Zhou, Binbin,Denning, Mark S.,Rees, Nicholas H.,Goicoechea, Jose M.
, p. 426 - 436 (2010)
Reactions between ethylenediamine (en) solutions of the intermetallic Zintl phases K3E7 (E = P, As) and a series of homoleptic post-transition metal organometallics such as Cu5(Mes)5, M(C6H5)2 (M = Zn, Cd) and In(C 6H5)3 have yielded a family of novel bimetallic cluster anions. These new species were isolated as [K(2, 2,2-crypt)] + salts in [K(2,2,2-crypt)]4Cu2E14 (E = P (1), As (2)), [K(2,2,2-crypt)]4ZnE14 (E = P (3), As (4)), [K(2,2,2-crypt)]4CdP14·6py (5) and [K(2,2,2-crypt)]2E7InPh2 (E = P (6), As (7)). Species 2, 3, 5 and 6 were crystallographically characterised by single-crystal X-ray diffraction. The stability of all of the cluster anions in solution was confirmed by electrospray mass-spectrometry and by 1H, 13C{1H} and 31P{1H} NMR spectroscopy when possible. The Royal Society of Chemistry.
A phosphine-free, heterogeneous palladium-catalyzed atom-efficient carbonylative cross-coupling of triorganoindiums with aryl halides leading to unsymmetrical ketones
You, Shengyong,Xiao, Ruian,Liu, Haiyi,Cai, Mingzhong
, p. 13862 - 13870 (2017/11/27)
The first phosphine-free heterogeneous palladium-catalyzed carbonylative cross-coupling of aryl halides with triorganoindiums has been developed that proceeds smoothly under 1 or 2.5 atm of carbon monoxide in THF at 68 °C and provides a general and powerful tool for the synthesis of various valuable unsymmetrical ketones with high atom-economy, good yield, and recyclability of the catalyst. Our system not only avoids the use of phosphine ligands, but also solves the basic problem of palladium catalyst recovery and reuse.
Transition-Metal-Free Cross-Coupling of Indium Organometallics with Chromene and Isochroman Acetals Mediated by BF3·OEt2
Gil-Negrete, José M.,Sestelo, José Pérez,Sarandeses, Luis A.
, p. 4316 - 4319 (2016/10/12)
A transition-metal-free coupling of triorganoindium reagents with benzopyranyl acetals mediated by a Lewis acid has been developed. The reaction of R3In with chromene and isochroman acetals in the presence of BF3·OEt2 afforded 2-substituted chromenes and 1-substituted isochromans, respectively, in good yields. The reactions proceed with a variety of triorganoindium reagents (aryl, heteroaryl, alkynyl, alkenyl, alkyl) using only 50 mol % of the organometallic, thus demonstrating the efficiency of these species. Preliminary mechanistic studies indicate the formation of an oxocarbenium ion intermediate in the presence of the Lewis acid.
Synthesis of functionalized thiophenes and oligothiophenes by selective and iterative cross-coupling reactions using indium organometallics
Montserrat Martinez,Pena-Lopez, Miguel,Sestelo, Jose Perez,Sarandeses, Luis A.
, p. 3892 - 3898 (2012/06/04)
The synthesis of unsymmetrical 2,5-disubstituted thiophenes by selective and sequential palladium-catalyzed cross-coupling reactions of indium organometallics with 2,5-dibromothiophene is reported. Following an iterative coupling sequence, α-oligothiophenes were synthesized in good yields and with high atom economy.
