3-Vinyl-2,6-dioxacyclohexan-1-ones 1, by treatment with N-tosyl or N-aryl isocyanates and a catalytic amount of Pd0, are converted into N-tosyl- and N-aryl-3-vinyl-2-aza-6-oxacyclohexan-1-ones 2 in good yields and with unique stereoselectivity.
Y. Tamaru, T. Bando, Y. Kawamura, K. Okamura, Z. Yoshida and M. Shiro, J. Chem. Soc., Chem. Commun., 1992, 1498 DOI: 10.1039/C39920001498
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