Rhodium-catalyzed regioselective addition of thioacids to terminal allenes: enantioselective access to branched allylic thioesters
作者:A. Ziyaei Halimehjani、B. Breit
DOI:10.1039/d1cc06470c
日期:——
Rhodium-catalyzed regio- and enantioselective hydrothiolation of terminal allenes with thioacids is reported for the atom-economic synthesis of chiral branched allylic thioesters. By using a rhodium(I) catalyst system, diversities of terminal allenes and thioacids afforded the corresponding branched thioesters in excellent regioselectivity, high yield, and good enantioselectivity. This method was also explored
据报道,在手性支链烯丙基硫酯的原子经济合成中,铑催化的末端丙二烯与硫代酸的区域选择性和对映选择性氢硫醇化反应。通过使用铑( I )催化剂体系,末端丙二烯和硫代酸的多样性提供了相应的支链硫酯,具有优异的区域选择性、高收率和良好的对映选择性。该方法还探索了 Fmoc 保护的氨基硫代酸,用于非对映选择性合成相应的硫酯。
A Convenient Synthesis of<i>S</i>-Acyl Phenylselenosulfides
Differentiation between similarly reactive sites in molecules represents an ongoing challenge of organic synthesis. Herein we described one kind of versatile reagents, N-thiohydroxy succinimide esters (NTSEs), serving as both acyl and acylthio surrogates for the diverse synthesis of ketones, thioesters, amides, and acyl disulfides by selective cleavage of similarly reactive C–S and N–S bonds.
Klimko, Yu. E.; Isaev, S. D.; Yurchenko, A. G., Russian Journal of Organic Chemistry, 1994, vol. 30, # 11, p. 1776 - 1783
作者:Klimko, Yu. E.、Isaev, S. D.、Yurchenko, A. G.
DOI:——
日期:——
In Situ Carboxyl Activation Using a Silatropic Switch: A New Approach to Amide and Peptide Constructions
作者:Wenting Wu、Zhihui Zhang、Lanny S. Liebeskind
DOI:10.1021/ja2065158
日期:2011.9.14
The novel reactivity of O-silylthionoesters with amine nucleophiles to generate oxoamides (rather than thioamides) is described. A straightforward first-generation trimethylsilylation protocol using bistrimethylsilylacetamide (BSA) combined with the unique reactivity of the O-silylthionoesters toward 1 degrees and 2 degrees amines to generate oxoamides provides the simplest means of activating a thiol acid for peptide bond formation at neutral pH. Excellent stereoretention is observed.