Silica Sulfuric Acid as a Efficient and Recyclable Solid Acid Catalyst for the One-Pot Synthesis of 2,4,6-Triaylpyridines Under Solvent Free Conditions
An efficientsynthesis of 2,4,6-triarylpyridines is achieved via a three-component reaction of acetophenone, aryl aldehydes and ammonium acetate in one-potunder solvent-free conditions. The reaction work-up is very simple and the catalyst can be easily separated from the reaction mixture and reused three times in subsequent reactions.
Acid-controlled multicomponent selective synthesis of 2,4,6-triaryl pyridines and pyrimidines by using hexamethyldisilazane as a nitrogen source under microwave irradiation
作者:Chieh-Kai Chan、Yi-Hsiu Chung、Cheng-Chung Wang
DOI:10.1039/d2ra04739j
日期:——
protocol for the synthesis of functionalized 2,4,6-triaryl pyridines and pyrimidines was developed from commercially available aromatic ketones, aldehydes and hexamethyldisilazane (HMDS) as a nitrogen source undermicrowave irradiation. In this multicomponent synthetic route, Lewis acids play an important role in selectively synthesizing six-membered heterocycles, including pyridines (1N) and pyrimidines
Three-Component One-Pot Synthesis of 2,4,6-Triarylpyridines without Catalyst and Solvent
作者:Min Wang、Zhongyong Yang、Zhiguo Song、Qinglin Wang
DOI:10.1002/jhet.2132
日期:2015.5
An efficient and green synthesis of 2,4,6‐triarylpyridines by a one‐pot three‐component condensation of aromatic aldehydes, substituted acetophenones, and ammonium acetate without catalyst at 130°C under solvent‐free conditions is described. This method offers several advantages such as simple procedure, easy work‐up, short reaction time, low cost, environmentally friendly conditions, and moderate to high yields.
Katritzky, Alan R.; Adamson, Jeffrey; Elisseou, E. Michael, Journal of the Chemical Society. Perkin transactions II, 1982, p. 1041 - 1048
作者:Katritzky, Alan R.、Adamson, Jeffrey、Elisseou, E. Michael、Musumarra, Giuseppe、Patel, Ranjan C.、et al.