5726-19-2Relevant articles and documents
Wiberg et al.
, p. 3169 (1973)
Silica-supported boric acid catalyzed synthesis of dihydropyrimidin-2-ones, bis(indolyl)methanes, esters and amides
Kumar, Vishal,Singh, Chitra,Sharma, Upendra,Verma, Praveen K.,Singh, Bikram,Kumar, Neeraj
, p. 83 - 89 (2014/02/14)
Silica-supported boric acid (H3BO3-SiO2) has been established as a green, efficient and recyclable catalyst for the synthesis of dihydropyrimidin-2-ones, bis(indolyl)methanes, and acetylation of alcohols, phenols, amines and thiols under solvent free conditions. The main features of the present method include clean reaction, mild conditions, low loading of environment friendly catalyst and easy workup procedure. The catalyst can be recycled at least five times without any significant loss in activity.
Bismuth(III) nitrate-catalyzed solvent-free acetylation of alcohols and phenols with acetic anhydride
Heravi,Behbahani,Daroogheha,Oskooie
experimental part, p. 1108 - 1109 (2011/02/28)
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