3Wan Yiqian, Wu Xiongyu, Kannan M A, et al. Boron Trichloride as an Efficient and Selective Agent for Deprotection of ten-Butyl Aryl Sulfonamides. Tetrahedron Lett, 2003,44(24) :4 523-4 525.
4Shuji Hirano, Yasuhiro Fukudome, Ryoichi Tanaka, et al. Practical Preparation of N-( 1-Alkynyl ) Sulfonamides and Their Synthetic Utility in Titanium Alkoxide-Mediated Coupling Reactions. Tetrahedron, 2006,62(16) : 3 896 -3 916.
5Roberts J T, Rittberg B R, Kovacic P. Pyrolysis of N,N-Dihalo Derivatives of Amides and Sulfonamides. J Org Chem, 1981, 46 (20) : 3 988-3 991.
6Oppolzer W, Wills M, Starkemann C, et al. Chiral Toluene-2,α- Sultana Auxiliaries: Preparation and Structure of Enantiomerically Pure (2R)- and (S)-Ethyl-2,1' -Sultam. Tetrahedron Lett, 1990, 31(29) : 4 117 -4 120.
7Martinez-Merino V, Gil M J, Zabalza J M, et al. Molecular Modelling of the Isothiazolo [ 5,4-b ] Pyridin-3 (2H) -One Derivatives. Tetrahedron, 1996, 52 (26) : 8 947 - 8 956.
8King J F, Lam J Y L, Dave V. ten-Butyl Cation Formation in the Hydrolysis of 2-Methyl-2-Propanesulfonyl Chloride, the Simplest Tertiary Alkanesulfonyl Chloride. J Org Chem, 1995,60 ( 9 ) : 2 831-2 834.
9Maricich T J, Hoffman V L. (ltf,2S) -Ephedrinium(S) -i-Butylsul-finylacetate. J Am Chem Soc, 1974, 96(25) :7 770 -7 781.
10Brewster JH, Buta JG. Conformational mobility and optical rotation effects of aromatic nuclei [J]. JAm Chem Soc, 1966, 88(10): 2233-2240.