The organocatalytic alkylation of 2-methyl-N-heteroaromatics with alcohols has been achieved via SN1-type C(sp3)–H functionalization, providing a green and efficient synthesis of indole and ferrocene-functionalized N-heteroaromatics in high yields.
通过S N 1型C(sp 3)–H官能化已经实现了2-甲基-N-杂芳族化合物与醇的有机催化烷基化,从而以高收率提供了绿色高效的吲哚和二茂铁官能化的N-杂芳族化合物的合成。
Fluorinated Alcohol-Mediated S<sub>N</sub>1-Type Reaction of Indolyl Alcohols with Diverse Nucleophiles
This paper describes an efficient SN1-type reaction of 3-indolylmethanols with miscellaneous nucleophiles, featuring a catalyst-free procedure, low cost, wide substrate scope and mild reaction conditions. This approach provides green and efficient methods for the synthesis of diverse 3-substituted indolyl derivatives as well as unsymmetrical bisindolylmethanes and triarylmethanes.
本文介绍了3-吲哚甲醇与杂种亲核试剂的高效S N 1型反应,具有无催化剂操作,成本低,底物范围宽和反应条件温和的特点。这种方法为合成各种3-取代的吲哚基衍生物以及不对称的双吲哚基甲烷和三芳基甲烷提供了绿色有效的方法。
Silica Gel Mediated Friedel–Crafts Alkylation of 3‐Indolylmethanols with Indoles: Synthesis of Unsymmetrical Bis(3‐indolyl)methanes
An efficient and expedient approach for the synthesis of unsymmetrical 3,3′-Bis-indolylmethanes via silica gel-mediated Friedel-Craftsalkylation of 3-indolylmethanols with diverse indoles is described. The synthetic utility of this transformation was demonstrated by reusing silica gel up to 10 times without apparent loss of reactivity .
The acid free asymmetric intermolecular α-alkylation of aldehydes in fluorinated alcohols
作者:Jian Xiao、Kai Zhao、Teck-Peng Loh
DOI:10.1039/c2cc30261f
日期:——
The acid free asymmetric intermolecular α-alkylation of aldehydes with alcohols has been discovered using trifluoroethanol as solvent. This unprecedented system affords the enantioenriched functionalized primary alcohols (after NaBH4 reduction) in high yields and good to excellent enantioselectivities with wide substrate scope in the absence of any acid additive.