Method of synthesizing 5,15-diarylbenzochlorin-7-one compounds
US5780622A · kind A · utility
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11Claims
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Key dates
| Filing date | Aug 11, 1997 |
| Grant date | Jul 14, 1998 |
| Priority date | — |
| Expiry date | Aug 11, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D487/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A novel 5,15-diarylbenzochlorin-7-one compound having the formula (I) or (II): ##STR1## wherein M is a metal. A novel method for synthesizing the compound of formula (I) comprises the steps of: PA1 a. cyclizing a meso-(formylvinyl) 5,15-diarylporphyrin to form a cyclization reaction mixture, and PA1 b. oxidizing said reaction mixture to form the 5,15-diarylbenzochlorin-7-one of formula (I). A novel method for synthesizing the compound of formula (II) comprises the cyclizing and oxidizing steps listed above and, either prior to or after the oxidizing step, adding the step of demetallating the compound.
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