نتایج جستجو برای: sodium alkoxides
تعداد نتایج: 187945 فیلتر نتایج به سال:
Alkali metal monoalcoholates of 1,3-diols can be used as very effective catalysts in the Tishchenko reaction of 4-hydroxy-1,3-dioxanes to the corresponding monoesters of 1,3-diols. These catalysts are extremely efficient and fast compared to metal hydroxides commonly used. Thus, monoalcoholate catalysts give fast transesterification with the product ester. The loss in yield due to ester interch...
Porous silica materials made by low-temperature sol-gel process are promising host matrixes for encapsulation of biomolecules. To date, researchers have focused on sol-gel routes using alkoxides such as tetramethyl orthosilicate (TMOS) and tetraethyl orthosilicate (TEOS) for encapsulation of biomolecules. These routes lead to formation of alcohol as a byproduct that can have a detrimental effec...
A series of heteroleptic titanium derivatives general formula [Ti(OiPr)2(R-acac)2] with acetylacetonate ligands modified in the internal (?- or 3-) position by different substituents (R=OAc, NO2, Me, Et, Cl, Br) has been synthesized and completely characterized liquid multinuclear NMR FTIR. The influence nature group on thermal stability complexes was studied thermogravimetric analysis (TGA) ga...
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