共查询到20条相似文献,搜索用时 0 毫秒
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Dennis G. Hall Jyoti Tailor Michel Gravel 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》1999,111(20):3250-3253
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RaedM. Al‐Zoubi Olivier Marion DennisG. Hall 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2008,120(15):2918-2921
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Jianzhang Zhao Thomas M. Fyles Tony D. James 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2004,116(26):3543-3546
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Jian Dai Shudong Lin Du Cheng Seyin Zou Xintao Shuai 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2011,123(40):9576-9580
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Carmen Schrapel Ren Peters 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2015,127(35):10428-10432
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《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2017,129(52):16829-16832
Coupling of readily available boronic acids and diazo compounds has emerged recently as a powerful metal‐free carbon–carbon bond forming method. However, the difficulty in forming the unstable diazo compound partner in a mild fashion has hitherto limited their general use and the scope of the transformation. Here, we report the application of oxadiazolines as precursors for the generation of an unstable family of diazo compounds using flow UV photolysis and their first use in divergent protodeboronative and oxidative C(sp2)−C(sp3) cross‐coupling processes, with excellent functional‐group tolerance. 相似文献
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Alexander Dauth Jennifer A. Love 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2010,122(48):9405-9410
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Haiyan Zhang Wei Huang Tongtong Wang Fanke Meng 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2019,131(32):11165-11169
Catalytic diastereo‐ and enantioselective hydroalkenylation of 3,3‐disubstituted cyclopropenes with readily accessible alkenylboronic acids, promoted by a chiral phosphine/Co complex, is presented. Such a process constitutes the unprecedented and direct introduction of a wide range of alkenyl groups onto the cyclopropane motif to afford multisubstituted cyclopropanes in up to 95 % yield with greater than 95:5 d.r. and 99:1 e.r. Functionalization of the products delivered enantioenriched cyclopropanes that are otherwise difficult to access. 相似文献
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《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2017,129(47):15332-15336
We report herein the use of a dual catalytic system comprising a Lewis base catalyst such as quinuclidin‐3‐ol or 4‐dimethylaminopyridine and a photoredox catalyst to generate carbon radicals from either boronic acids or esters. This system enabled a wide range of alkyl boronic esters and aryl or alkyl boronic acids to react with electron‐deficient olefins via radical addition to efficiently form C−C coupled products in a redox‐neutral fashion. The Lewis base catalyst was shown to form a redox‐active complex with either the boronic esters or the trimeric form of the boronic acids (boroxines) in solution. 相似文献
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Kevin W. Anderson Stephen L. Buchwald 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2005,117(38):6329-6333
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Sejal J. Patel Timothy F. Jamison 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2003,115(12):1402-1405
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Glenn C. Micalizio Stuart L. Schreiber 《Angewandte Chemie (Weinheim an der Bergstrasse, Germany)》2002,114(17):3406-3410