- Preparation method of alkyl sulfide
-
The invention relates to a preparation method of alkyl sulfide. The method comprises the following steps: under the protection of nitrogen, sequentially adding transition metal, a nitrogen ligand, a cocatalyst, an oxidant, a solvent, alkane and thiophenol or mercaptan into a reaction tube, carrying out oxidative dehydrogenation coupling reaction at 80-150 DEG C, ending the reaction after 6-48 hours, evaporating the solvent to dryness, and carrying out column chromatography separation to obtain the alkyl sulfide compound. The method is simple in synthesis process, mild in reaction condition, high in yield and easy to industrialize.
- -
-
Paragraph 0068
(2019/12/02)
-
- Simple synthesis of modafinil derivatives and their anti-inflammatory activity
-
Simple synthesis of modafinil derivatives and their biological activity are described. The key synthetic strategies involve substitution and coupling reactions. We determined the anti-inflammatory effects of modafinil derivatives in cultured BV2 cells by measuring the inhibition of nitrite production and expression of iNOS and COX-2 after LPS stimulation. It was found that for sulfide analogues introduction of aliphatic groups on the amide part (compounds 11a-d) resulted in lower anti-inflammatory activity compared with cyclic or aromatic moieties (compounds 11e-k). However, for the sulfoxide analogues, introduction of aliphatic moieties (compounds 12a-d) showed higher anti-inflammatory activity than cyclic or aromatic fragments (compounds 12e-k) in BV-2 microglia cells.
- Jung, Jae-Chul,Lee, Yeonju,Son, Jee-Young,Lim, Eunyoung,Jung, Mankil,Oh, Seikwan
-
p. 10446 - 10458
(2012/11/07)
-
- Synthesis and determination of the absolute configuration of the enantiomers of modafinil
-
The asymmetric synthesis of both enantiomers of modafinil, a unique CNS stimulant with a reduced abuse liability, is described. This approach effectively prepares modafinil on a multigram scale in several steps from benzhydrol. The described synthetic route has also been used to produce the more water soluble analogue, adrafinil. X-ray crystallographic analysis on (-)-(diphenylmethanesulfinyl)acetic acid has determined the absolute configuration to be R.
- Prisinzano, Thomas,Podobinski, John,Tidgewell, Kevin,Luo, Min,Swenson, Dale
-
p. 1053 - 1058
(2007/10/03)
-
- A PROCESS FOR THE PREPARATION OF MODAFINIL
-
A process for the preparation of 2-[(diphenylmethyl)sulfinyl]acetamide (I) comprising the oxidation of sodium 2-[(diphenylmethyl)sulfenyl]acetate to the corresponding sulfoxide and the derivatization of the latter to amide.
- -
-
Page/Page column 7
(2008/06/13)
-
- Intramolecular rhodium carbenoid insertions into aromatic C-H bonds. Preparation of 1,3-dihydrothiophene 2,2-dioxides fused onto aromatic rings
-
The preparation of 1-carboalkoxy-1,3-dihydrobenzenothiophene 2,2-dioxides via rhodium acetate or rhodium trifluoro-acetate catalyzed decomposition of α-diazo-β-arylmethanesulfonyl esters is described.The reaction has been extended to yield 1,3-dihydrothiophene 2,2-dioxides fused to the 2,3 position of thiophene and indole, but not of furans.In the latter case products derived from the opening of the furan ring were obtained.Key words: synthesis, 1-carboalkoxy-1,3-dihydrobenzothiophene 2,2-dioxides, intramolecular carbenoid insertions, rhodium acetate catalysis.
- Babu, Suresh D.,Hrytsak, Michael D.,Durst, Tony
-
p. 1071 - 1076
(2007/10/02)
-
