In the presence of a catalytic amount of bis(1-morpholinocarbamoyl-4,4-dimethyl-1,3-pentanedionato)cobalt(II), various 5-hydroxy-1-alkenes are converted to the corresponding 2-hydroxymethyltetrahydrofurans in good yields with extremely high trans selectivities by the oxidative cyclization with molecular oxygen. The yields of cyclization products are improved by addition of hydroperoxide.
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Inoki et al. (1990) studied this question.
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