Method of preparing fused ring indeno compounds
US9206151B2 · kind B2 · utility
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12Claims
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Key dates
| Filing date | Nov 20, 2013 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Dec 10, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2603/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to methods of preparing fused ring indeno compounds that involves reacting together a dienophile and a lactone compound, in the presence of a catalyst, and a carboxylic acid anhydride. With some embodiments, the fused ring indeno compound is represented by the following Formula (I-A), the dienophile is represented by the following Formula (II-A), and the lactone compound is represented by the following Formula (III-A):
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.