Breaking the Base Barrier: An Electron-Deficient Palladium Catalyst Enables the Use of a Common Soluble Base in C-N Coupling.
Breaking the Base Barrier: An Electron-Deficient Palladium Catalyst Enables the Use of a Common Soluble Base in C-N Coupling.
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DOI:
10.1021/jacs.8b01696
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发表时间:
2018-04-04
影响因子:
15
通讯作者:
Buchwald SL
中科院分区:
文献类型:
--
作者:
Dennis JM;White NA;Liu RY;Buchwald SL
Due to the low intrinsic acidity of amines, palladium-catalyzed C–N cross-coupling has been plagued continuously by the necessity to employ strong, inorganic, insoluble bases. To surmount the many practical obstacles associated with these reagents, we utilized a commercially available dialkyl triarylmonophosphine-supported palladium catalyst that facilitates a broad range of C–N coupling reactions in the presence of weak, soluble bases. The mild and general reaction conditions show extraordinary tolerance for even highly base-sensitive functional groups. Additionally, insightful heteronuclear NMR studies using 15N-labeled amine complexes provide evidence for the key acidifying effect of the cationic palladium center.
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DOI:
10.1002/anie.201705525
发表时间:
2017-08-21
期刊:
Angewandte Chemie (International ed. in English)
影响因子:
--
作者:
Olsen EPK;Arrechea PL;Buchwald SL
通讯作者:
Buchwald SL
影响因子:
56.9
作者:
Santanilla, Alexander Buitrago;Regalado, Erik L.;Dreher, Spencer D.
通讯作者:
Dreher, Spencer D.
影响因子:
8.4
作者:
Noel, Timothy;Naber, John R.;Buchwald, Stephen L.
通讯作者:
Buchwald, Stephen L.
影响因子:
2.1
作者:
CAHILL, R;COOKSON, RC;CRABB, TA
通讯作者:
CRABB, TA
影响因子:
62.1
作者:
Ruiz-Castillo, Paula;Buchwald, Stephen L.
通讯作者:
Buchwald, Stephen L.