Anionic chiral cobalt(III) complexes as catalysts of asymmetric synthesis of cyanohydrins
作者:Yu. N. Belokon’、V. I. Maleev、I. L. Mal’fanov、T. F. Savel’eva、N. S. Ikonnikov、A. G. Bulychev、D. L. Usanov、D. A. Kataev、M. North
DOI:10.1007/s11172-006-0338-4
日期:2006.5
Chiral coordinatively saturated cobalt(III) complexes with Schiff bases of enantio-pure amino acids are formed as Λ and Δ-isomers, which are not transformed into each other under normal conditions. These complexes catalyze the formation of enantiomerically enriched cyanohydrins from aldehydes and Me3SiCN under homo-and heterogeneous catalysis.
Metal free mild and selective aldehyde cyanosilylation by a neutral penta-coordinate silicon compound
作者:V. S. V. S. N. Swamy、Milan Kumar Bisai、Tamal Das、Sakya S. Sen
DOI:10.1039/c7cc03948d
日期:——
This study demonstrates the preparation and structural characterization of a Si(IV) hydride (PhC(NtBu)2SiH(CH3)Cl) (1) and its use as a catalyst for cyanosilylation of a variety of aldehydes. Compound1 represents the first neutral penta-coordinate silicon(IV) species that catalyzes cyanosilylation of aldehydes under mild condition.
Methyltriphenylphosphonium iodide catalyzes the addition of trimethylsilyl cyanide to aldehydes
作者:Rubén Córdoba、Joaquı́n Plumet
DOI:10.1016/s0040-4039(03)01391-1
日期:2003.8
Methyltriphenylphosphonium iodide catalyzes the formation of cyanohydrin trimethylsilyl ethers of aliphatic, aromatic and heterocyclic aldehydes.
甲基三苯基碘化碘催化脂肪族,芳香族和杂环醛的氰醇三甲基甲硅烷基醚的形成。
The Addition of Trimethylsilyl Cyanid to Carbonyl Compounds Using Yb(OTf)<sub>3</sub> as Lewis Acid Catalyst
作者:Yang Yang、Dong Wang
DOI:10.1055/s-1997-1071
日期:——
Yb(OTf)3 was found to be an effective catalyst in the addition of TMSCN to various carbonyl compounds. Highly chemoselective process was observed in the reactions of α-keto aldehyde acetals. Catalyst Yb(OTf)3 is tolerant to the hydroxy group of glyoxylate hydrates used. Catalytic diastereoselective trimethylsilylcyanation of chiral aldehydes and cyanation of glyoxylate hydrates can be carried out under mild condition with moderate de.
Cyanosilylation of aldehydes and ketones. A convenient route to cyanohydrin derivatives
作者:D. A. Evans、L. K. Truesdale、G. L. Carroll
DOI:10.1039/c39730000055
日期:——
A wide variety of aldehydes and ketones reacts with trimethylsilyl cyanide under both thermal and catalytic conditions to give α-silyloxy nitriles which may be useful intermediates and protective groups in organic synthesis.