反応と合成の進歩シンポジウム 発表要旨概要
第37回反応と合成の進歩シンポジウム
セッションID: 1O-04
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10:00~11:20 口頭発表 (座長 竹本 佳司)
[2.2]パラシクロファン骨格を有する面不斉触媒の設計と合成
*北垣 伸治太田 有羽朝長 昌一郎高橋 亮平向 智里
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We have developed a concise and efficient synthetic method of planar chiral pseudo-ortho-substituted aryl[2.2]paracyclophane molecules possessing C-H bond donors and/or nucleophilic functional groups through the stepwise successive palladium-catalyzed coupling of 12-bromo[2.2]cyclophan-4-yl triflate. Buchwald-Hartwig amination and subsequent Suzuki-Miyaura coupling, followed by the functional group transformation afforded aryl[2.2]cyclophanyl thiourea derivatives. The combination of Suzuki-Miyaura coupling and phosphinylation delivered arylcyclophanyl phosphines. The catalytic activities of the newly synthesized chiral cyclophanyl-thioureas and -phosphines were evaluated based on the aza-Morita-Baylis-Hillman reaction of N-tosylaldimine and methyl vinyl ketone.

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© 2011 日本薬学会
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