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An Efficient Palladium-Catalyzed N-Alkylation of Amines Using Primary and Secondary Alcohols
被引:139
作者:
Tuan Thanh Dang
[1
]
Ramalingam, Balamurugan
[1
]
Shan, Siah Pei
[1
]
Seayad, Abdul Majeed
[1
]
机构:
[1] Inst Chem & Engn Sci, Singapore 138665, Singapore
来源:
ACS CATALYSIS
|
2013年
/
3卷
/
11期
关键词:
alkylation;
alcohol activation;
hydrogen borrowing;
palladium catalyst;
amine synthesis;
ASTERISK-IR COMPLEX;
TRANSFER HYDROGENATION;
COUPLING REACTIONS;
DEHYDRATIVE ALKYLATION;
SELECTIVE ALKYLATION;
HETEROCYCLIC CARBENE;
RECYCLABLE CATALYST;
REDUCTIVE AMINATION;
HIGHLY EFFICIENT;
IRIDIUM COMPLEX;
D O I:
10.1021/cs400799n
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
PdCl2 in the presence of dppe or Xantphos(t-Bu) as the ligand is found to be an efficient catalyst for the N-alkylation of various primary and cyclic secondary amines using primary alcohols at 90-130 degrees C under neat conditions. Interestingly, good to excellent yields were achieved when more challenging secondary alcohols were used as alkylating agents at 130-150 degrees C. The reaction could be easily scaled up, as demonstrated for a 10 mmol scale achieving yields up to 90% with a TON of 900.
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页码:2536 / 2540
页数:5
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