Synthesis and Characterization of Multiple Functionalized Cyclohexanone Using Diels–Alder Reaction of α-Nitrocinnamate

Abstract

A systematic study of the Diels–Alder reaction of α-nitrocinnamate was performed. The reaction of p-substituted α-nitrocinnamate with 2,3-dimethyl-1,3-butadienes smoothly proceeded regardless of the p-substituent, which was either an electron-donating or -withdrawing group. A control reaction revealed that α-nitrocinnamate isomerized during the reaction. Danishefsly’s diene (1-methoxy-3-trimethylsiloxy-1,3-butadiene) facilitated cycloaddition under mild conditions to afford a cycloadduct without the alternation of the diastereomeric ratio. Moreover, the desilylation of the cycloadduct furnished multiple functionalized cyclohexanones.

(1E,3E)-1,4-Dinitro-1,3-butadiene—Synthesis, Spectral Characteristics and Computational Study Based on MEDT, ADME and PASS Simulation

“…These compounds exhibit various biological activities such as antibacterial [ 5 , 6 ] or antifungal [ 7 ]. This makes CNAs often used in many reactions such as Michael addition [ 8 , 9 ] as well as cycloaddition (CA) reactions, to synthesize heterocycles, especially for the preparation of five-membered rings [ 10 ] like pyrazolines [ 11 , 12 ], isoxazolines [ 13 , 14 , 15 , 16 ] or pyrrolidine [ 17 , 18 ], and six-membered rings in the Diels-Alder reaction [ 19 , 20 , 21 ].…”