Literature: Xu, Feng; Savary, Kimberly; Williams, J. Michael; Grabowski, Edward J. J.; Reider, Paul J. Tetrahedron Letters, 2003 , vol. 44, # 6 p. 1283 - 1286
Literature: Xu, Feng; Savary, Kimberly; Williams, J. Michael; Grabowski, Edward J. J.; Reider, Paul J. Tetrahedron Letters, 2003 , vol. 44, # 6 p. 1283 - 1286