Abstract
Cyclic acetals 1c–e and 1g can be nitrated smoothly with nitrogen dioxide in ice-cooled dichloromethane in the presence of ozone and magnesium oxide to give mainly ortho- and para- nitro derivatives in good combined yields, the acetal protective group remaining almost intact; acylal 6 is similarly nitrated on the aromatic ring to give a mixture of isomeric nitro derivatives 7, in which the ortho and meta isomers predominate.
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More From: Journal of the Chemical Society, Perkin Transactions 1
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