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Isolable Copper(I) η2-Cyclopropene Complexes
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2020-11-08 , DOI: 10.1021/acs.inorgchem.0c02886
Anurag Noonikara-Poyil 1 , Shawn G. Ridlen 1 , H. V. Rasika Dias 1
Affiliation  

Treatment of bis(pyrazolyl)borate ligand supported [(CF3)2Bp]Cu(NCMe) with 1,2,3-trisubstituted cyclopropenes produced thermally stable copper(I) η2-cyclopropene complexes amenable to detailed solution and solid-state analysis. The [(CF3)2Bp]Cu(NCMe) also catalyzed [2 + 1]-cycloaddition chemistry of terminal and internal alkynes with ethyl diazoacetate affording cyclopropenes, including those used as ligands in this work. The tris(pyrazolyl)borate [(CF3)2Tp]Cu(NCMe) is a competent catalyst for this process as well. The treatment of [(CF3)2Tp]Cu with ethyl 2,3-diethylcycloprop-2-enecarboxylate substrate gave an O-bonded rather than a η2-cyclopropene copper complex.

中文翻译:

可分离的铜(I)η 2 -环丙烯配合物的

二治疗(吡唑基)硼酸根配位体的支持[(CF 32 BP]的Cu(NCMe)与1,2,3-三取代的环丙烯生成热稳定的铜(I)η 2 -环丙烯配合物适合于详细溶液和固态分析。[(CF 32 Bp] Cu(NCMe)也用重氮乙酸乙酯催化末端炔烃和内部炔烃的[2 +1]环加成化学,提供环丙烯,包括在本工作中用作配体的那些。三(吡唑基)硼酸酯[(CF 32 Tp] Cu(NCMe)也是该工艺的有效催化剂。[[CF 32的处理TP]铜用乙酸乙酯2,3- diethylcycloprop -2-烯甲酸乙酯基板得到的O键合,而不是一个η 2 -环丙烯的铜络合物。
更新日期:2020-12-21
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