Application of silica vanadic acid as a heterogeneous, selective and highly reusable catalyst for oxidation of sulfides at room temperature
摘要:
Silica vanadic acid (vanadium has been supported on silica) is applied as an efficient, highly reusable and heterogeneous catalyst for the selective oxidation of sulfide to sulfoxide using hydrogen peroxide and in the acetonitrile as a solvent at room temperature. The catalyst can be easily recovered and reused for ten reaction cycles without considerable loss of activity. Also, some advantages of this method were applicable at large scales, high TON of catalyst, chemoselectivity, easy work-up and short reaction time. (C) 2013 Elsevier B.V. All rights reserved.
[EN] COMPOSITION, SYNTHESIS, AND USE OF A NEW CLASS OF ISONITRILES<br/>[FR] COMPOSITION, SYNTHÈSE ET UTILISATION D'UNE NOUVELLE CLASSE D'ISONITRILES
申请人:UNIV HOLY GHOST DUQUESNE
公开号:WO2015127226A1
公开(公告)日:2015-08-27
This invention relates to novel isonitriles, including arylthio isonitriles, and methods for their preparation. The isonitriles include a conjugated ring system. The structure is designed with the flexibility to have multiple substitution patterns. The isonitriles may be used in applications including, but not limited to, pharmaceutical compositions.
DIBENZORYLENETETRACARBOXIMIDES AS INFRARED ABSORBERS
申请人:Koenemann Martin
公开号:US20100048904A1
公开(公告)日:2010-02-25
Dibenzorylenetetracarboximides of the general formula I
in which the variables are each defined as follows:
R′ are identical or different radicals:
hydrogen; optionally substituted aryloxy, arylthio, hetaryloxy or hetarylthio;
R are identical or different radicals:
hydrogen; optionally substituted C
1
-C
30
-alkyl, C
3
-C
8
-cycloalkyl, aryl or hetaryl;
m, n are each independently 0 or 1.
LIQUID CRYSTALLINE RYLENE TETRACARBOXYLIC ACID DERIVATIVES AND USE THEREOF
申请人:Koenemann Martin
公开号:US20110042651A1
公开(公告)日:2011-02-24
The present invention relates to liquid-crystalline rylenetetracarboxylic acid derivatives, to processes for their preparation and to their use as n-type organic semiconductors for producing organic field-effect transistors and solar cells.
ALIPHATIC THIOETHERS BY<i>S</i>-ALKYLATION OF THIOLS VIA TRIALKYL BORATES
作者:Deniz Gunes、Okan Sirkecioglu、Niyazi Bicak
DOI:10.1080/10426500903213563
日期:2010.7.30
A simple and convenient one-pot procedure is described for the synthesis of thioethers via boron esters. This procedure involves in-situ generation of alkyl sulfates by reaction of trialkylborates with concentrated sulfuric acid and subsequent reaction with thiols in the presence of pyridine. The reactions with boron esters of primary or secondary alcohols proceed cleanly at 100°C and afford aliphatic
A Versatile One‐Pot Synthesis of Dialkyl Disulfides and Sulfides
作者:David W. Emerson、Byron L. Bennett、Spencer M. Steinberg
DOI:10.1081/scc-200050331
日期:2005.3.1
Abstract Conversions of monofluoroalkyl and alkyl bromides to the corresponding dialkyldisulfides in a one‐pot synthesis using thiourea followed by basic hydrogen peroxide are described. Modified methods afford access to unsymmetrical disulfides and sulfides.