Abstract A visible-light induced metal-free approach was described for the hydroxyalkylation of 2H-benzothiazoles with alcohols by using selectfluor as the oxidant. A variety of 2H-benzothiazoles and alcohols could be tolerated, providing a mild and simple method for the synthesis of C2-hydroxyalkylated 2H-benzothiazoles in moderate to good yields. Besides, ethers were also compatible in this reaction
Direct C2-Alkylation of Azoles with Alcohols and Ethers through Dehydrogenative Cross-Coupling under Metal-Free Conditions
作者:Tao He、Lin Yu、Lei Zhang、Lei Wang、Min Wang
DOI:10.1021/ol201779n
日期:2011.10.7
metal-free novel, simple, and highly efficient method for the direct C2-alkylation of azoles with alcohols and ethers has been developed on the basis of an oxidative C–H activation process. The dehydrogenative C–C cross-coupling reactions of α-position sp3 C–H in alcohols and ethers with the 2-position sp2 C–H in azoles proceeded smoothly in the presence of tert-butyl hydroperoxide (TBHP) under neat reaction
Baker’s yeast-mediated synthesis of (R)- and (S)-heteroaryl-ethane-1,2-diols
作者:Paula Veronica Podea、Csaba Paizs、Monica Ioana Toşa、Florin Dan Irimie
DOI:10.1016/j.tetasy.2008.07.030
日期:2008.8
Baker’s yeast-mediated enantioselective bioreduction of 1-(heteroaryl)-2-hydroxyethanones and 2-acetoxy-1-(hetero-aryl)ethanones was used for the enantioselective synthesis of both (R)- and (S)-benzofuranyl-, benzo[b]thiophenyl- and benzo[d]thiazolyl-ethane-1,2-diols.
贝克的酵母介导的1-(杂芳基)-2-羟基乙酮和2-乙酰氧基-1-(杂芳基)乙酮的对映选择性生物还原被用于(R)-和(S)-苯并呋喃基-苯并的对映选择性合成。[ b ]硫代苯基-和苯并[ d ]噻唑基乙烷-1,2-二醇。