Cobalt‐Catalyzed Cross‐Coupling of Functionalized Alkylzinc Reagents with (Hetero)Aryl Halides
作者:Ferdinand H. Lutter、Lucie Grokenberger、Philipp Spieß、Jeffrey M. Hammann、Konstantin Karaghiosoff、Paul Knochel
DOI:10.1002/anie.201914490
日期:2020.3.27
A combination of 10 % CoCl2 and 20 % 2,2'-bipyridine ligands enables cross-coupling of functionalized primary and secondary alkylzinc reagents with various (hetero)arylhalides. Couplings with 1,3- and 1,4-substituted cycloalkylzinc reagents proceeded diastereoselectively leading to functionalized heterocycles with high diastereoselectivities of up to 98:2. Furthermore, alkynyl bromides react with