Pyridazinedione-based heterobicyclic covalent linkers and methods and applications thereof
US-2024425465-A1 · Dec 26, 2024 · US
US10793584B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10793584-B2 |
| Application number | US-201716473886-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 13, 2017 |
| Priority date | Dec 27, 2016 |
| Publication date | Oct 6, 2020 |
| Grant date | Oct 6, 2020 |
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In order to provide a naphthobischalcogenadiazole derivative that can be used as an intermediate for producing a naphthobischalcogenadiazole compound into which a fluorine atom has been introduced, the naphthobischalcogenadiazole derivative in accordance with an aspect of the present invention is represented by a formula (I): where each of A 1 and A 2 is independently an oxygen atom, a sulfur atom, a selenium atom, or a tellurium atom; and each of X 1 and X 2 is independently a hydrogen atom, a halogen atom, a boronic acid group, a boronic acid ester group, a boronic acid diaminonaphthalene amide group, an N-methyliminodiacetic acid boronate group, a trifluoroborate salt group, or a triolborate salt group.
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The invention claimed is: 1. A naphthobischalcogenadiazole derivative represented by a formula (I): where each of A 1 and A 2 is independently an oxygen atom, a sulfur atom, a selenium atom, or a tellurium atom; and each of X 1 and X 2 is independently a boronic acid group, a boronic acid ester group, a boronic acid diaminonaphthalene amide group, an N-methyliminodiacetic acid boronate group, a trifluoroborate salt group, or a triolborate salt group. 2. The naphthobischalcogenadiazole derivative as set forth in claim 1 , wherein each of A 1 and A 2 is independently an oxygen atom, a sulfur atom, or a selenium atom. 3. The naphthobischalcogenadiazole derivative as set forth in claim 1 , wherein both of A 1 and A 2 are sulfur atoms or selenium atoms. 4. The naphthobischalcogenadiazole derivative as set forth in claim 1 , wherein both of X 1 and X 2 are boronic acid ester groups. 5. The naphthobischalcogenadiazole derivative as set forth in claim 4 , wherein the boronic acid ester group is a boronic acid dialkyl ester group or a boronic acid cyclic ester group. 6. A method for producing a naphthobischalcogenadiazole derivative represented by a formula (I): where each of A 1 and A 2 is independently an oxygen atom, a sulfur atom, a selenium atom, or a tellurium atom; and each of X 1 and X 2 is independently a hydrogen atom, a halogen atom, a boronic acid group, a boronic acid ester group, a boronic acid diaminonaphthalene amide group, an N-methyliminodiacetic acid boronate group, a trifluoroborate salt group, or a triolborate salt group, said method comprising the step of oxidizing and then reducing diamino-difluoro-dinitronaphthalene or hydrochloride thereof. 7. A method as set forth in claim 6 , said method comprising the steps of: reducing the diamino-difluoro-dinitronaphthalene or hydrochloride thereof to obtain tetraamino-difluoronaphthalene or hydrochloride thereof; causing the tetraamino-difluoronaphthalene or hydrochloride thereof to react with a sulfurizing agent, a selenizing agent, or a tellurizing agent to obtain a naphthobischalcogenadiazole derivative; and then causing the naphthobischalcogenadiazole derivative to react with a halogenating agent or a boronizing agent. 8. A method as set forth in claim 6 , said method comprising the steps of oxidizing and then reducing diamino-difluoro-dinitronaphthalene or hydrochloride thereof, and causing a naphthobischalcogenadiazole derivative, which has been obtained in the above step, to react with a halogenating agent or a boronizing agent. 9. A method as set forth in claim 6 , further comprising the steps of: producing tetraamino-difluoronaphthalene or hydrochloride thereof by reducing the diamino-difluoro-dinitronaphthalene or hydrochloride thereof; and then causing the tetraamino-difluoronaphthalene or hydrochloride thereof to react with a sulfurizing agent, a selenizing agent, or a tellurizing agent. 10. A method as set forth in claim 6 , further comprising the step of producing the diamino-difluoro-dinitronaphthalene or hydrochloride thereof by subjecting diamino-difluoronaphthalene or hydrochloride thereof to nitration reaction. 11. A method as set forth in claim 10 , further comprising the step of producing the diamino-difluoronaphthalene or hydrochloride thereof by subjecting difluoronaphthalene to amination reaction. 12. A method as set forth in claim 11 , further comprising the step of producing the difluoronaphthalene by subjecting diaminonaphthalene to fluorination reaction. 13. A method as set forth in claim 9 , further comprising the step of producing the diamino-difluoro-dinitronaphthalene or hydrochloride thereof by subjecting diamino-difluoronaphthalene or hydrochloride thereof to nitration reaction. 14. A method as set forth in claim 13 , further comprising the step of producing the diamino-difluoronaphthalene or hydrochloride thereof by subjecting difluoronaphthalene to amination reaction. 15. A method as set forth in claim 14 , further comprising the step of producing the difluoronaphthalene by subjecting diaminonaphthalene to fluorination reaction.
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