A mild, efficient and improved protocol for the synthesis of novel indolyl crown ethers, di(indolyl)pyrazolyl methanes and 3-alkylated indoles using H4[Si(W3O10)3]
摘要:
Efficient electrophilic substitution reactions of indoles with various aldehydes proceed smoothly in acetonitrile using heteropoly acid (H-4[Si(W3O10)(3)]) to afford the corresponding new indolyl crown ethers and di(indolyl)pyrazolyl methanes. H-4[Si(W3O10)(3)] is also found to catalyze the Michael addition of indoles to alpha,beta-unsaturated compounds for the synthesis of 3-alkylated indoles. (c) 2005 Elsevier Ltd. All rights reserved.
A mild, efficient and improved protocol for the synthesis of novel indolyl crown ethers, di(indolyl)pyrazolyl methanes and 3-alkylated indoles using H4[Si(W3O10)3]
摘要:
Efficient electrophilic substitution reactions of indoles with various aldehydes proceed smoothly in acetonitrile using heteropoly acid (H-4[Si(W3O10)(3)]) to afford the corresponding new indolyl crown ethers and di(indolyl)pyrazolyl methanes. H-4[Si(W3O10)(3)] is also found to catalyze the Michael addition of indoles to alpha,beta-unsaturated compounds for the synthesis of 3-alkylated indoles. (c) 2005 Elsevier Ltd. All rights reserved.
A mild, efficient and improved protocol for the synthesis of novel indolyl crown ethers, di(indolyl)pyrazolyl methanes and 3-alkylated indoles using H4[Si(W3O10)3]
作者:Rajendran Murugan、Murugesan Karthikeyan、Paramasivam T. Perumal、Boreddy S.R. Reddy
DOI:10.1016/j.tet.2005.09.108
日期:2005.12
Efficient electrophilic substitution reactions of indoles with various aldehydes proceed smoothly in acetonitrile using heteropoly acid (H-4[Si(W3O10)(3)]) to afford the corresponding new indolyl crown ethers and di(indolyl)pyrazolyl methanes. H-4[Si(W3O10)(3)] is also found to catalyze the Michael addition of indoles to alpha,beta-unsaturated compounds for the synthesis of 3-alkylated indoles. (c) 2005 Elsevier Ltd. All rights reserved.