Additive-Free Palladium-Catalyzed Decarboxylative Cross-Coupling of Aryl Chlorides
作者:Ryan A. Daley、En-Chih Liu、Joseph J. Topczewski
DOI:10.1021/acs.orglett.9b01620
日期:2019.6.21
The cross-coupling of sodium (hetero)aryl carboxylates with (hetero)aryl chlorides proceeds with 1 mol % palladium catalyst and does not require inorganic base, silver salts, or copper salts. This coupling uses two low energy partners, and the only stoichiometric byproducts are carbon dioxide and sodium chloride. The substrate scope includes less activated aryl chlorides and carboxylates (>25 examples)
(杂)芳基羧酸钠与(杂)芳基氯化物的交叉偶联用1mol%的钯催化剂进行,不需要无机碱,银盐或铜盐。这种耦合使用两个低能伙伴,唯一的化学计量副产物是二氧化碳和氯化钠。底物范围包括较少活化的芳基氯化物和羧酸盐(> 25个实例)。钯的负载量可以降低到0.1mol%,并且可以使用布赫瓦尔德(Buchwald)型预催化剂。