Nor-seco-bis-nor-seco, tris-nor-seco, and higher nor-seco-cucurbit[n]uril compounds

Abstract

Nor-seco-type cucurbit[n]uril compounds and methylene bridged glycoluril oligomers are produced by reacting glycoluril and formaldehyde in strong organic or mineral acid at a temperature adequate to condense the reactants. These compounds are characterized by lacking —CH2— groups rendering their internal cavities more open and, for example, more responsive to guest compounds.

Dependencies are inferred from the claim text.