Nor-seco-bis-nor-seco, tris-nor-seco, and higher nor-seco-cucurbit[n]uril compounds
US8299269B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Oct 20, 2006 |
| Grant date | Oct 30, 2012 |
| Priority date | — |
| Expiry date | Feb 14, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/14
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.