Journal
RSC ADVANCES
Volume 3, Issue 17, Pages 6022-6029Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra40458g
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Funding
- National Natural Science Foundation of China [21101080]
- Fundamental Research Funds for the Central Universities of China [JUSRP10905, JUSRP211A07, 1045210372090460]
- Natural Science Foundation of Jiangsu Province [BK2011144]
- 333 Talent Project of Jiangsu Province
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By developing a new and efficient dinuclear catalyst [Ru(CO)(2)(Xantphos)](2) [Xantphos = 4,5-bis(diphenylphosphino)-9,9-dimethyl-9H-xanthene], an improved synthesis of indole from vicinal diols and anilines by cooperative catalysis of ruthenium complex and p-TSA (para-toluenesufonic acid) has been demonstrated. The presented synthetic protocol allows assembling a wide range of products in an efficient manner. Comparing to the existed protocols, our indole syntheses can be achieved at lower reaction temperature, in shorter reaction time, and with improved substrate tolerance.
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