FeCl<sub>3</sub>-Assisted Niobium-Catalyzed Cycloaddition of Nitriles and Alkynes: Synthesis of Alkyl- and Arylpyrimidines Based on Independent Functions of NbCl<sub>5</sub>and FeCl<sub>3</sub>Lewis Acids
作者:Maito Fuji、Yasushi Obora
DOI:10.1021/acs.orglett.7b02708
日期:2017.10.20
NbCl5-catalyzed [2 + 2 + 2] cycloaddition of nitriles with alkynes was used to synthesize pyrimidine derivatives. In this reaction, the use of individual Lewis acids, namely NbCl5 and FeCl3, is a key strategy for achieving the reaction using a catalytic amount of NbCl5. The roles of the two Lewis acids were investigated using FT-IR spectroscopy. The results showed that NbCl5 served as an efficient
Borodaev, S. V.; Zubkova, O. V.; Luk'yanov, S. M., Journal of Organic Chemistry USSR (English Translation), 1988, vol. 24, # 11, p. 2100 - 2103
作者:Borodaev, S. V.、Zubkova, O. V.、Luk'yanov, S. M.
DOI:——
日期:——
Luk'yanov, S. M.; Borodaev, S. V.; Zubkova, O. V., Journal of Organic Chemistry USSR (English Translation), 1992, vol. 28, # 12.2, p. 2081 - 2084
作者:Luk'yanov, S. M.、Borodaev, S. V.、Zubkova, O. V.
DOI:——
日期:——
Martinez, A. Garcia; Herrera, A.; Martinez, R., Journal of Heterocyclic Chemistry, 1988, vol. 25, p. 1237 - 1241
作者:Martinez, A. Garcia、Herrera, A.、Martinez, R.、Teso, E.、Garcia, A.、et al.
DOI:——
日期:——
Strategy for the Synthesis of Pyrimidine Derivatives: NbCl<sub>5</sub>-Mediated Cycloaddition of Alkynes and Nitriles
作者:Yasushi Satoh、Kaoru Yasuda、Yasushi Obora
DOI:10.1021/om300669s
日期:2012.8.13
Intermolecular cycloadditions of alkynes (terminal alkynes and internal alkynes) with aryl nitriles were successfully achieved, using an NbCl5 complex, to give substituted pyrimidine derivatives in high yields with excellent chemo- and regioselectivity.