Stereoselective Synthesis of Chiral Sulfilimines from <i>N</i>-Mesyloxycarbamates: Metal-Nitrenes versus Metal-Nitrenoids Species
作者:Hélène Lebel、Henri Piras
DOI:10.1021/acs.joc.5b00256
日期:2015.4.3
The synthesis of a variety of chiral sulfilimines and sulfoximines is described. The amination of thioethers with a chiral N-mesyloxycarbamate was achieved in high yields and stereoselectivities using Rh2[(S)-nttl]4 as catalyst in the presence of 4-dimethylaminopyridine (DMAP) and a pyridinium salt, such as bis(DMAP)CH2Cl2 or a viologen salt. These additives proved instrumental to enhance both the
A simple and efficient method for preparation of unsymmetrical sulfides
作者:Jianming Yin、Charles Pidgeon
DOI:10.1016/s0040-4039(97)01352-x
日期:1997.8
A simple and high efficient method for preparation of unsymmetrical sulfides is described.
描述了一种制备不对称硫化物的简单高效的方法。
Enantioselective Nitrene Transfer to Sulfides Catalyzed by a Chiral Iron Complex
作者:Jun Wang、Marcus Frings、Carsten Bolm
DOI:10.1002/anie.201304451
日期:2013.8.12
Iron works: Enantioselectivenitrenetransfer to sulfide was accomplished by a chiraliron(III)/PyBOX catalyst (see scheme). Various sulfimides were thus obtained in high enantioselectivities and yields. Applications of this protocol to the syntheses of enantioenriched sulfoximines and an epoxide were also demonstrated.
Iron-Catalyzed Amination of Sulfides and Sulfoxides with Azides in Photochemical Continuous Flow Synthesis
作者:Hélène Lebel、Henri Piras、Marie Borduy
DOI:10.1021/acscatal.5b02495
日期:2016.2.5
A photochemical (UVA) continuous flow process for the amination of thioethers and sulfoxides was performed with trichloroethoxysulfonyl azide in the presence of catalytic iron(III) acetylacetonate. Aromatic and aliphatic sulfilimines and sulfoximines were produced in high yields and short reaction times. The reaction with chiral sulfoxides was stereospecific, producing enantioenriched sulfoximines
Methods for the synthesis of a polyoxometalate compounds include heating a metal precursor in the presence of an organic salt. The polyoxometalate compounds produced herein display high photoluminescence quantum yields and photoluminescence maximums in the blue and/or violet regions of the electromagnetic spectrum.