Sulfated tungstate as hydroxyl group activator for preparation of benzyl, including <i>p</i>-methoxybenzyl ethers of alcohols and phenols
作者:Kamlesh V. Katkar、Sachin D. Veer、Krishnacharya G. Akamanchi
DOI:10.1080/00397911.2016.1230218
日期:2016.12.1
ABSTRACT Sulfated tungstate was found to be an effective heterogeneous and reusable catalyst for hydroxy group activation–mediated preparation of benzylic ethers including p-methoxybenzylic ethers of a wide range of alcohols and phenols under mild reaction conditions. GRAPHICAL ABSTRACT
selective method for the conversion of allylic, secondary- and tertiary benzylic alcohols into their corresponding ethers in the presence of iron(III) as FeCl3 and Fe(ClO4)3 under solvolytic condition is described. The results obtained from an optically active allylic alcohol show that a carbonium ion is formed during the course of the reaction.
[EN] METHOD AND APPARATUS FOR THE SYNTHESIS OF DIHYDROARTEMISININ AND ARTEMISININ DERIVATIVES<br/>[FR] PROCÉDÉ ET APPAREIL DE SYNTHÈSE DE DIHYDROARTÉMISININE ET DE DÉRIVÉS D'ARTÉMISININE
申请人:MAX PLANCK GES ZUR FÖRDERUNG DER WISSENSCHAFTEN E V
公开号:WO2015007693A1
公开(公告)日:2015-01-22
The present invention is directed to a method for continuous production of dihydroartemisinin and also artemisinin derivatives derived from dihydroartemisinin by using artemisinin or dihydroartemisinic acid (DHAA) as starting material as well as to a continuous flow reactor for producing dihydroartemisinin as well as the artemisinin derivatives. It was found that the reduction of artemisinin to dihydroartemisinin in a continuous process requires a special kind of reactor and a special combination of reagents comprising a hydride reducing agent, at least one activator such as an inorganic activator, at least one solid base, at least one aprotic solvent and at least one C1-C5 alcohol.
Method and apparatus for the synthesis of dihydroartemisinin and artemisinin derivatives
申请人:Max-Planck-Gesellschaft zur Förderung
der Wissenschaften e.V.
公开号:EP2826779A1
公开(公告)日:2015-01-21
The present invention is directed to a method for continuous production of dihydroartemisinin and also artemisinin derivatives derived from dihydroartemisinin by using artemisinin or dihydroartemisinic acid (DHAA) as starting material as well as to a continuous flow reactor for producing dihydroartemisinin as well as the artemisinin derivatives. It was found that the reduction of artemisinin to dihydroartemisinin in a continuous process requires a special kind of reactor and a special combination of reagents comprising a hydride reducing agent, at least one activator such as an inorganic activator, at least one solid base, at least one aprotic solvent and at least one C1-C5 alcohol.
The present invention includes compositions that are useful in preventing or treating metastasis in a subject diagnosed with cancer. The present invention also includes methods of preventing or treating metastasis in a subject diagnosed with cancer, wherein the method comprises administering to the subject in need thereof an effective amount of a pharmaceutical formulation comprising at least one pharmaceutically acceptable carrier and at least one CX
3
CR1 or fractalkine antagonist.