Hydroborations, reductions and reductive iodinations using BHI2: N(C2H5)2Ph Complex
作者:Ch. Kishan Reddy、Mariappan Periasamy
DOI:10.1016/s0040-4020(01)80500-7
日期:1992.1
useful for hydroboration of alkenes, reduction of amides, iodination of alcohols, reductive iodination of carboxylic acids, aldehydes and ketones. Selective hydroboration of monosubstituted olefin over disubstituted olefinic moiety and terminal olefins over internal alkyne moiety have been achieved using this reagent. Carboxylic esters and nitriles are not affected by this reagent. Selective hydroboration
通过BH 3:N(C 2 H 5)2 Ph与I 2反应制备的BHI 2:N(C 2 H 5)2 Ph络合物可以用于烯烃的硼氢化,酰胺的还原,醇的碘化,羧酸,醛和酮的还原碘化。使用该试剂已经实现了在二取代的烯烃部分上的单取代烯烃和在内部炔烃部分上的末端烯烃的选择性氢硼化。羧酸酯和腈不受该试剂的影响。在酯和腈官能团的存在下,实现了1-烯烃的选择性硼氢化和环己酮的选择性还原碘化。
A convenient reduction of alkylated tosylmethyl isocyanides
作者:J.S. Yodov、P.Satyanarayana Ready、Bhalchandra V. Joshi
DOI:10.1016/s0040-4020(01)86095-6
日期:1988.1
A convenient and simple method for the reduction of mono- and diatkylated tosylmethyl isocyanides with lithium in liquid ammonia to corresponding hydrocarbons is described. The utility of this methodology adopted in the synthesis of tricos-9Z-ene. (7g), a. sex pheromone of common house fly, (-)-1S.5R, 7S-exo-brevicomin (17), an antipode of sex pheromone of Western pine beetle and (4S,5S)-5-hydroxy-4-decanolide
noteworthy that the catalyst is also applicable to the oxidation of unsaturatedalcohols such as geraniol and nerol without any isomerization of an alkenic part. Another characteristic property of this heterogeneous catalyst is that a shape selectivity depending on the structure of alcohols is observed in some cases. The catalyst also has advantages such as ease of handling, easy preparation, and reusability