Zhang J, Sun WN, Jiang Z, Jia SK, Mei GJ. Diastereodivergent and Regioselective Synthesis of Tetrahydrofuro[2,3-
b]furans with Four Consecutive Stereocenters.
J Org Chem 2024;
89:4134-4144. [PMID:
38394632 DOI:
10.1021/acs.joc.4c00069]
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Abstract
Base-catalyzed diastereodivergent and regioselective domino processes of triketone enones with arylacetaldehydes for the synthesis of tetrahydrofuro[2,3-b]furans with four consecutive stereocenters are reported. Good yields and diastereoselectivities are obtained when DBU is employed as a catalyst; in contrast, Et3N delivers a different diastereomer in excellent diastereoselectivity. This work offers many advantages, including switchable diastereoselectivity, cheap base catalysts, and a simple operation.
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