Synthesis of Structurally Diverse 3,4-dihydropyrimidin-2(1)-ones Via Sequential Biginelli and Passerini Reactions
Overview
Affiliations
The Biginelli reaction was combined with the Passerini reaction for the first time in a sequential multicomponent tandem reaction approach. After evaluation of all possible linker components and a suitable solvent system, highly functionalized dihydropyrimidone-α-acyloxycarboxamide compounds were obtained in good to excellent yields. In a first reaction step, different 3,4-dihydropyrimidin-2(1)-one acids were synthesized, isolated and fully characterized. These products were subsequently used in a Passerini reaction utilizing a dichloromethane/dimethyl sulfoxide solvent mixture. By variation of the components in both multicomponent reactions, a large number of structurally diverse compounds could be synthesized. In addition, a one-pot Biginelli-Passerini tandem reaction was demonstrated. All products were carefully characterized via 1D and 2D NMR as well as IR and HRMS.
Lambat T, Abdala A, Mahmood S, Ledade P, Chaudhary R, Banerjee S RSC Adv. 2022; 9(68):39735-39742.
PMID: 35541403 PMC: 9076070. DOI: 10.1039/c9ra08478a.
Multicomponent reactions provide key molecules for secret communication.
Boukis A, Reiter K, Frolich M, Hofheinz D, Meier M Nat Commun. 2018; 9(1):1439.
PMID: 29651145 PMC: 5897361. DOI: 10.1038/s41467-018-03784-x.