4-dimethylaminopyridine-catalyzed cascade reaction for efficient synthesis of naphthofurans
Chenli Fan , Xinwei He , Kaisheng Liao , Cui’e Wang , Yongjia Shang
Chemical Research in Chinese Universities ›› 2016, Vol. 32 ›› Issue (1) : 62 -67.
4-dimethylaminopyridine-catalyzed cascade reaction for efficient synthesis of naphthofurans
A convenient and efficient method was developed for the synthesis of naphtho[2,1-b]furans via 4-dimethylaminopyridine(DMAP)-catalyzed cascade reaction of 2-hydroxy-1-naphthaldehydes and α-halogenated ketones in moderate to good yields in the presence of Na2CO3 at 80 ºC for 6 h. The mechanism for this process was briefly discussed with a tentative catalytic cycle proposed. Moreover, this method features organocatalysts and high step-economy, which make it practical and attractive.
4-Dimethylaminopyridine / α-Halogenated ketone / Cascade reaction / Naphthofuran / Organocatalysis
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