1. Zieglar, F.E. Chem. Rev. 1988, 88, 1423; Wipf, P. Comprehensive Organic Synthesis; Trost, B.M. Ed.; Vol. 5; Pergamon; Oxford, 1991, p 827; Castro, A.M.M. Chem. Rev. 2004, 104, 2939–3002; Majumdar, K.C.; Alam, S.; Chattopadhyay, B. Tetrahedron 2008, 597–643
2. Lutz, R.P. Chem. Rev. 1984, 84, 205–247; Corey, E.J.; Lee, D.H. J. Am. Chem. Soc. 1991, 113, 4026–4028; Maruoka, K.; Saito, S.; Yamamoto, H. J. Am. Chem. Soc. 1995, 117, 1165–1166; Kazmaier, U.; Krebs, A. Ang. Chem. Int. Ed. Engl. 1995, 34, 2012–2014; Yoon, T.P.; Dong V.M.; MacMillan, T.W.C. J. Am. Chem. Soc. 1999, 43, 9726–9727
3. Majumdar, K.C.; Kundu, N.K.; Ghosh, S.K. Org. Lett. 2002, 4, 2629–2631; Majumdar, K.C.; Saha, S.; De, R.N.; Ghosh, S.K. J. Chem. Soc. Perkin Trans. 1993, 1, 715–718; Majumdar, K.C.; Chatterjee, P.; Saha, S. Tetrahed. Lett. 1998, 39, 7147–7148; Majumdar, K.C.; De, R.N.; Khan, A.T.; Chattopadhyay, S.K.; Dey, K.; Patra, A. J. Chem. Soc. Perkin Trans. 1988, 1, 777–779
4. Deana, A.A.; Stokker, G.E.; Schultz, E.M.; Smith, R.L.; Cragoe Jr, E.J.; Russo, H.F.; Watson, L.S. J. Med. Chem. 1983, 26, 580–585; Gordon, M.; Grover, S.H.; Strothers, J.B. Can. J. Chem. 1973, 51, 2092–2097; Wenkert, E.; Buckwalter, B.L. J. Am. Chem. Soc. 1972, 94, 4367–4369
5. Wawzoneck, S. Heterocyclic Compounds; Elderfield, R.C., Ed.; Wiley: New York, 1951; Vol. 2; p 176; Staunton, J. Comprehensive Organic Chemistry; Sammes, P.G., Ed.; Pergamon Press: Oxford, 1979; Vol. 4; p 646; Hepworth, J.D. Comprehensive Heterocyclic Chemistry; Bulton, A.J.; Mckillop, A., Eds.; Pergamon Press: Oxford, 1984; Vol. 3, p 799