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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク ZACA reaction ： ウィキペディア英語版 ZACA reaction The zirconium-catalyzed asymmetric carbo-alumination reaction (or ZACA reaction) was developed by Nobel laureate Ei-ichi Negishi.〔Ei-ichi Negishi, ''ARKIVOC'', 2011 (viii) 34-53, http://www.arkat-usa.org/get-file/37396/ and references therein.〕 It facilitates the chiral functionalization of alkenes using organoaluminium compounds under the influence of chiral bis-indenylzirconium catalysts (e.g. bearing chiral terpene residues, as in (+)- or (−)-bis()zirconium dichloride). In a first step the alkene inserts into an Al-C bond of the reagent, forming a new chiral organoaluminium compound in which the aluminium atom occupies the lesser hindered position. This intermediate is usually oxidized by oxygen to form the corresponding chiral alcohol (cf. hydroboration–oxidation reaction). The reaction can also be applied to dienes, where the least sterically hindered double bond is attacked selectively. == See also == *Organoaluminium chemistry *Organozirconium chemistry *Indenyl effect 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「ZACA reaction」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.