Hydride Reduction by a Sodium Hydride-Iodide Composite
作者:Pei Chui Too、Guo Hao Chan、Ya Lin Tnay、Hajime Hirao、Shunsuke Chiba
DOI:10.1002/anie.201600305
日期:2016.3.7
Sodium hydride (NaH) is widely used as a Brønsted base in chemical synthesis and reacts with various Brønsted acids, whereas it rarely behaves as a reducing reagent through delivery of the hydride to polar π electrophiles. This study presents a series of reduction reactions of nitriles, amides, and imines as enabled by NaH in the presence of LiI or NaI. This remarkably simple protocol endows NaH with
Manganese catalyzed C-alkylation of methyl <i>N</i>-heteroarenes with primary alcohols
作者:Akash Jana、Amol Kumar、Biplab Maji
DOI:10.1039/d1cc00181g
日期:——
C-Alkylations of nine different classes of methyl-substituted N-heteroarenes, including quinolines, quinoxalines, benzimidazoles, benzoxazoles, pyrazines, pyrimidines, pyridazines, pyridines, and triazines are disclosed. A bench stable earth-abundant Mn(I)-complex catalyzed the chemoselective hydrogen-transfer reaction utilizing a diverse range of primary alcohols as the non-fossil fuel-derived carbon
Heavier Alkaline Earth Amides as Catalysts for the Tischenko Reaction
作者:Mark R. Crimmin、Anthony G. M. Barrett、Michael S. Hill、Panayiotis A. Procopiou
DOI:10.1021/ol0627247
日期:2007.1.1
Homoleptic heavier alkaline earth amides, MN(SiMe3)2}2(THF)2 (M = Ca, Sr, and Ba) are reported as precatalysts for the dimerization of aldehydes to the analogous carboxylic esters (Tischenkoreaction). [reaction: see text].
作者:Paolo N. Grenga、Eric G. Stoutenburg、Ronny Priefer
DOI:10.1016/j.tetlet.2012.06.137
日期:2012.9
The photolytic decay of a library of para -substituted dibenzylic sulfites has been evaluated by UV radiation in a Srinivasan–Griffin–Rayonet photochemical reactor in various deuterated solvents. The decay for each dibenzylic sulfite was examined with respect to Swain and Lupton’s field constant, FF. The rate of photolytic decay varies depending on the identity of the benzyl substituents. Furthermore
of aldehydes is described. The conversion of aromatic and even heteroaromatic aldehydes in the presence of catalytic amounts of sodium hydride leads to the corresponding Tishchenko esters in high yields (up to 95 %). The reaction can be performed under standard laboratory conditions and on a multigram scale (up to 10 g).