A selective method for the preparation of aliphatic methyl esters in the presence of aromatic carboxylic acids

Synthesis, Characterization and Catalytic Activity of Sn-SBA-15 Mesoporous Molecular Sieves

“…A number of useful esterification methods have been reported in the literature, catalyzed by a variety of acids, ion exchange resins, zeolites and solid acid catalysts [19][20][21][22][23][24][25][26][27][28]. Transesterifications are catalyzed by alkali metal hydroxides, alkoxides and tin, calcium or titanium compounds [29].…”

Synthesis and characterization of tin oxide-modified mesoporous SBA-15 molecular sieves and catalytic activity in trans-esterification reaction

“…In the present work, we report on the synthesis of SBA-15 with an aim to introduce Sn in different concentrations to obtain thin SnO 2 molecular films anchored inside the mesopores of Esterification of carboxylic acids and transesterification of esters have wide academic as well as industrial importance. A number of useful esterification methods have been reported in the literature, catalyzed by a variety of acids, ion exchange resins, zeolites, and solid acid catalysts [13][14][15][16][17][18][19][20][21][22]. Transesterifications are catalyzed by alkali metal hydroxides, alkoxides and tin, calcium or titanium compounds [23].…”

Development of competitive enzyme-linked immunosorbent assays for boscalid determination in fruit juices

“…Thus, reaction of 1 with 5-bromopentanoic acid (2) in aqueous potassium hydroxide solution gave de dicarboxylic acid 3 (Da Settimo et al, 2000). The aliphatic carboxylic group of 3 was chemoselectively protected as its methyl ester by treatment with 2,2-dimethoxypropane in the presence of a catalytic amount of anhydrous HCl, which was generated in situ from trimethylchlorosilane (Rodriguez, Nomen, & Spur, 1998), to afford the intermediate methyl ester 4 in about 76% overall yield for the two steps. With compound 4 at hand, the synthesis of the hapten BLa5 was readily completed as follows.…”