Novel domino reactions for the efficient synthesis of 5,6-dihydro-1,4,2-Oxathiazine (cas 1120-66-7)s

Add time:09/09/2019    Source:sciencedirect.com

A facile efficient synthesis of novel 3-aryl-5,6-dihydro-1,4,2-oxathiazin-6-ols from the reaction of (E)-N-hydroxyarylimidoyl chlorides and 1,4-dithiane-2,5-diol in the presence of triethylamine is described. This transformation presumably proceeds via in situ generation of 2-mercaptoacetaldehyde and nitrile oxide and their concomitant [3+3] annulation.

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