参考文献: [1] Journal of the American Chemical Society, 2003, vol. 125, #4, p.940-950;[2] European Journal of Organic Chemistry, 2013, #9, p.1811-1823;[3] Journal of Organic Chemistry, 1994, vol.59, #6, p.1257-1263;[4] Journal of the American Chemical Society, 1995, vol.117, #29, p.7696-7710;[5] Tetrahedron, 2011, vol.67, #30, p.5382-5388。