Add time:07/14/2019         Source:sciencedirect.com

A new synthesis of methylenomycin B (1) has been accomplished in four steps starting with a NI(CO)4 promoted cyclocondensation reaction of allyl chloride and 2-butyn-1-ol in MeOH, followed by hydrogenolysis of the resulting mixture to 2,3-dimethyl-5-methyl-oxycarbonylmethyl-2-cyclopentenone (3), which by hydrolysis and oxidative decarboxylation yielded 1.

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