Cerium(IV) Triflate‐Catalyzed Selective Gem‐diacetylation of Aldehydes with Acetic Anhydride

Abstract

It has been observed that a catalytic amount (0.1 mol%) of cerium(IV) triflate afforded geminal diacetates from aldehydes with acetic anhydride in toluene at ambient temperature. Ketones are not affected under these reaction conditions. The reaction is rapid and mild with good to high yields.

Ce(IV) immobilized on halloysite nanotube–functionalized dendrimer (Ce(IV)–G2): A novel and efficient dendritic catalyst for the synthesis of pyrido[3,2‐c]coumarin derivatives

“…[1,2] Among them, Ce(IV) compounds, which are commercially available, eco-friendly, strong Lewis acids, and one-electron oxidizing agents, have been used as effective catalysts in a variety of organic reactions. [3][4][5][6][7][8][9][10] However, because of the homogeneity of these transition metal catalysts, their recyclability and reusability are restricted. One way to overcome this problem, which is important both environmentally and economically, is the use of proper supports or stabilizers to fixate metallic particles.…”

LiHSO4/SiO2 as a New, Efficient and Reusable Catalytic System for the Chemoselective Conversion of Aldehydes to Acylals under Solvent‐Free Conditions

“…The acylation reaction was not carried out when p-(dimethylamino)benzaldehyde was used (Table 3, entry 13). The conversion of aldehydes to acylals was also performed successfully in the case of acid-sensitive aldehyde furfural, terephthalaldehyde and aliphatic aldehydes ( Table 3, entries [16][17][18].…”