Thiol–ene/oxidation tandem reaction under visible light photocatalysis: synthesis of alkyl sulfoxides
作者:Andrea Guerrero-Corella、Ana María Martinez-Gualda、Fereshteh Ahmadi、Enrique Ming、Alberto Fraile、José Alemán
DOI:10.1039/c7cc05672a
日期:——
The photocatalyzed synthesis of sulfoxides from alkenes and thiols has been carried out using Eosin Y.
烯烃和硫醇的光催化合成已经使用Eosin Y进行。
Synthesis of Indolines via a Domino Cu-Catalyzed Amidation/Cyclization Reaction
作者:Ana Minatti、Stephen L. Buchwald
DOI:10.1021/ol8008792
日期:2008.7.3
A highly efficient one-pot procedure for the synthesis of indolines and their homologues based on a domino Cu-catalyzed amidation/nucleophilic substitution reaction has been developed. Substituted 2-iodophenethyl mesylates and related compounds afforded the corresponding products in excellent yields. No erosion of optical purity was observed when transforming enantiomerically pure mesylates under the
Development of Isomerization and Cycloisomerization with Use of a Ruthenium Hydride with <i>N</i>-Heterocyclic Carbene and Its Application to the Synthesis of Heterocycles
ruthenium hydride complex with N-heterocyclic carbene (NHC) ligand was efficiently generated from the reaction of a second-generation Grubbs ruthenium catalyst with vinyloxytrimethylsilane and unambiguously characterized. This ruthenium hydride complex showed high catalytic activity for the selective isomerization of terminal olefin and for the cycloisomerization of 1,6-dienes. These reactions of N-allyl-o-vinylaniline
第二代Grubbs钌催化剂与乙烯基氧基三甲基硅烷的反应可有效生成具有N-杂环卡宾(NHC)配体的纯氢化钌络合物,并具有明确的特征。该氢化钌络合物对末端烯烃的选择性异构化和1,6-二烯的环异构化显示出高催化活性。的这些反应Ñ -allyl- Ò -vinylaniline导致新的合成方法杂环如吲哚和3-亚甲基-2,3- dihydroindoles,这对于生物活性天然产物有用的合成子。这些程序解决了面向多样性的综合中的一个重要问题。
Ruthenium Amide Complexes – Synthesis and Catalytic Activity in Olefin Metathesis and in Ring‐Opening Polymerisation
set of olefinmetathesis catalysts bearing a ruthenium amide moiety was synthesised. In the ruthenium amide form these complexes exhibit very low activity in standard metathesis reactions. However, a dramatic increase of activity was observed upon in situ activation with trimethylsilyl chloride or HCl, allowing successful application of such catalysts in a number of model ring‐closing metathesis, cross‐metathesis
amido derivatives of the first‐, second‐, and third‐generation Grubbs ruthenium catalysts were prepared, characterized, and tested in ring‐closing metathesis (RCM) of model dienes. In the ruthenium–amide (formally: 2‐ruthenaindole) form, these complexes exhibit nearly no activity in RCM. However, a dramatic increase of activity was observed upon in situ activation with an ethereal solution of HCl (see