期刊
CHEMICAL COMMUNICATIONS
卷 46, 期 23, 页码 4109-4111出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c002759f
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An additives study for the alkyl-alkyl Negishi reaction using an NHC-Pd catalyst revealed that bromide salts promote coupling while the cation is mechanistically benign. A double titration revealed that the cross-coupling begins at a 1 : 1 ratio of LiBr : (BuZnBr)-Bu-n, suggesting that a higher-order zincate, presumably LimZn(Bu-n)Br-3((2-m)-), is the active transmetalating agent.
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