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Synthesis of 2,3-Di- and 2,3,4-Trisubstituted Furans from 1,2-Dioxines Generated by an Enyne-RCM/Diels−Alder Reaction Sequence

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journal contribution
posted on 19.08.2005, 00:00 by Young-Keun Yang, Jung-Hoon Choi, Jinsung Tae
An efficient method for the synthesis of 2,3- and 2,3,4-substituted furans starting from acyclic enynes was developed using an enyne-RCM/Diels−Alder reaction sequence. The reaction conditions for the transformation of 1,2-dioxines having an adjacent 1,2-oxazine ring into furans and the cleavage of N−O bonds are discussed.