[PDF][PDF] Titania (TiO2)-Catalyzed Expedient, Solventless and Mild Synthesis of Bis(Indolyl)Methanes.
M Hosseini-Sarvari - Acta Chimica Slovenica, 2007 - Citeseer
Acta Chimica Slovenica, 2007•Citeseer
… Titania (TiO2) is found to be an efficient catalyst for the electrophilic substitution reaction
of indoles with aldehydes to afford the corresponding bis(indolyl)methanes in high yields
under solvent free conditions. … According to the literature data,17 I think that TiO2
catalyzes the reaction as a mild Lewis acid even under solvent-free conditions. TiO2 has (i)
Ti4+ site, which is of Lewis-acid type, (ii) O2– site, which is of Lewis-base type, and (iii)
surface –OH groups.The activation of carbonyls through hydrogen bonding by Lewis acids …
of indoles with aldehydes to afford the corresponding bis(indolyl)methanes in high yields
under solvent free conditions. … According to the literature data,17 I think that TiO2
catalyzes the reaction as a mild Lewis acid even under solvent-free conditions. TiO2 has (i)
Ti4+ site, which is of Lewis-acid type, (ii) O2– site, which is of Lewis-base type, and (iii)
surface –OH groups.The activation of carbonyls through hydrogen bonding by Lewis acids …
Abstract
Titania (TiO2) is found to be an efficient catalyst for the electrophilic substitution reaction of indoles with aldehydes to afford the corresponding bis (indolyl) methanes in high yields under solvent free conditions.
Citeseer
以上显示的是最相近的搜索结果。 查看全部搜索结果