雙芽手性卡本金屬錯合物 之合成與結構鑑定及其在催化反應之應用;Synthesis and Characterization of BINAP-Carbone Bimetallic Complexes and Their Application in Catalysis

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题名:	雙芽手性卡本金屬錯合物之合成與結構鑑定及其在催化反應之應用;Synthesis and Characterization of BINAP-Carbone Bimetallic Complexes and Their Application in Catalysis
作者:	廖靖瑜;Liao, Ching-Yu
贡献者:	化學學系
关键词:	,2′-雙二苯膦基-1,1′-聯萘;硼氫化反應;BINAP;hydroboration
日期:	2023-07-29
上传时间:	2024-09-19 14:47:00 (UTC+8)
出版者:	國立中央大學
摘要:	在有機金屬催化反應中，配位基時常扮演著重要的角色，其電子效應和立體效應會影響金屬錯合物的反應性。卡本 (carbone) 是一種近年來逐漸受到重視的配位基，由於其中心碳原子上具有兩對孤對電子，因此具有特殊的親核配位能力。在本論文中，我們利用外消旋的2,2′-雙二苯膦基-1,1′-聯萘 (BINAP) 為骨架，結合新型的卡本—同碳磷烷碳烯 (carbophosphinocarbene, CPC)，合成了雙芽配位基BINAP-CPC。利用BINAP-CPC與氯化亞銅 (copper(I) chloride) 反應，可以形成BINAP-CPC的單金屬銅錯合物，若利用第二對孤對電子與另一個Cu(I)或Au(I)等錯合物進行配位反應，可以構建出一系列雙金屬錯合物。我們透過X-ray單晶繞射解析和NMR的分析確認了這些由BINAP-CPC所形成的金屬錯合物之分子結構。為了測試這些雙金屬錯合物的應用性，我們將其作為催化劑應用於雙(頻哪醇)二硼 (B2pin2) 對炔烴化合物進行氫硼化反應，不論是內部炔或末端炔均能得到中等至良好的反應活性。;In organometallic chemistry and catalysis, the ligands play an important role. Their steric and electronic effects will greatly affect the reactivity of the coordinated metal complexes. Our laboratory is mainly devoted to developing a specific derivative of bent-allene, called "carbone". Carbone has extraordinary nucleophilicity because the central carbon atom has two free electron pairs. Development of various carbones based on the design of substituents and investigating their applications in metal coordination as well as catalysis, are highly desirable. In this work, we utilized one type of carbone, carbophosphinocarbenes (CPCs), on the 2,2’-bis(diphenylphosphino)-1,1’-binaphthyl (BINAP) to afford the racemic BINAP-CPC ligand. The synthesized BINAP-CPC was reacted with copper(I) chloride to give the mono-copper complex. The second lone pair on (BINAP-CPC)Cu(I) can further coordinate to another Cu(I) or Au(I), allowing an array of bimetallic complexes. The molecular structures of bimetallic complexes were confirmed by single-crystal X-ray diffraction and NMR analysis. Finally, applying such bimetallic catalysts in hydroboration of internal and terminal alkynes with bis(pinacolato)diboron (B2pin2) resulted in moderate to good reactivity.
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