Development of a New Strategy and Methodology for Baeyer-Villiger Oxidation
| Project/Area Number |
23390006
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Chemical pharmacy
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| Research Institution | The University of Tokushima |
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Principal Investigator |
OCHIAI Masahito 徳島大学, ヘルスバイオサイエンス研究部, 非常勤講師 (50127065)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2012: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2011: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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| Keywords | 有機化学 / Baeyer-Villiger酸化 / 臭素 / 超原子価 / 転位 / ケトン / アルデヒド / Baeyer-Villinger酸化 / エステル / 置換基効果 / 脱離基 |
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| Research Abstract |
A conceptually distinct, new strategy for Baeyer-Villiger oxidation (BVO) was developed by utilizing hypernucleofugality of arylbromane(III). Our method involves initial hydration of water to carbonyl compounds, followed by ligand exchange of hypervalent arylbromane on bromane(III), yielding a new type of Criegee intermediate. The intermediate undergoes BV rearrangement and produces an ester via reductive elimination of arylbromanyl(III) group, because of the hypernucleofugality. The novel strategy makes it possible to selectively induce the BV rearrangement of straight chain primary aliphatic as well as aromatic aldehydes, which is missing in the classical BVO. Our BVO takes place with extensive retention of stereochemistry at the migrating center. The carbon chain migration seems to depend primarily upon the electron-donor ability of migrating alkyl groups. Based on the substituent effects for aromatic aldehydes and quantum chemical calculations, the reaction mechanism was discussed.
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Report
(4 results)
Research Products
(58 results)
