期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 13, 页码 3469-3472出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201712668
关键词
amines; C-H activation; hydroaminoalkylation; tantalum alkyls; ureates
资金
- NSERC
- UBC
- Canada Research Chairs program
Atom-economic and regioselective Csp3-Csp3 bond formation has been achieved by rapid C-H alkylation of unprotected secondary arylamines with unactivated alkenes. The combination of Ta(CH2SiMe3)(3)Cl-2, and a ureate N,O-chelating-ligand salt gives catalytic systems prepared insitu that can realize high yields of -alkylated aniline derivatives from either terminal or internal alkene substrates. These new catalyst systems realize C-H alkylation in as little as one hour and for the first time a 1:1 stoichiometry of alkene and amine substrates results in high yielding syntheses of isolated amine products by simple filtration and concentration.
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