The title compound （C19H18O5S2） has been synthesized by the reaction of thio- phene-2-carboxaldehyde, isopropylidene malonate and 4-chloroaniline using [bmim]Br as solvent, and characterized by IR, ^1H NMR and X-ray...The title compound （C19H18O5S2） has been synthesized by the reaction of thio- phene-2-carboxaldehyde, isopropylidene malonate and 4-chloroaniline using [bmim]Br as solvent, and characterized by IR, ^1H NMR and X-ray single-crystal diffraction. The crystal belongs to monoclinic, space group P21/n with a = 9.4872（15）, b = 9.5148（13）, c = 20.634（3）A, β= 92.209（2）°, V= 1861.2（4）A^3, Mr= 390.45, Z = 4, Dc = 1.393 g/cm^3,μ（MoKα） = 0.313 mm^-1, F（000） = 816, the final R = 0.0685 and wR = 0.1685. X-ray analysis reveals that two six-membered rings adopt chair and planar conformations, respectively.展开更多
A new monomer, 3,9-diallyl-3, 9-dibenzyl-1, 5,7,11 - tetraoxa- spiro [5,5] undecane (6) was prepared by the reaction of 2- allyl- 2' - benzyl- propanediol - 1.3 with dibutyltin oxide, and then treated with CS_2. M...A new monomer, 3,9-diallyl-3, 9-dibenzyl-1, 5,7,11 - tetraoxa- spiro [5,5] undecane (6) was prepared by the reaction of 2- allyl- 2' - benzyl- propanediol - 1.3 with dibutyltin oxide, and then treated with CS_2. Monomer 4 could be initiated by cationic initiators to give a viscous polymer (white powder in the case of polymerization at 0℃). Upon the NMR and IR spectra of the obtained polymer, the components and their relative amount were estimated. The polymerization mechanism was discussed.展开更多
基金Supported by the Foundation of the Key Laboratory of Biotechnology for Medical Plants of Jiangsu Province (No. 02AXL13)
文摘The title compound （C19H18O5S2） has been synthesized by the reaction of thio- phene-2-carboxaldehyde, isopropylidene malonate and 4-chloroaniline using [bmim]Br as solvent, and characterized by IR, ^1H NMR and X-ray single-crystal diffraction. The crystal belongs to monoclinic, space group P21/n with a = 9.4872（15）, b = 9.5148（13）, c = 20.634（3）A, β= 92.209（2）°, V= 1861.2（4）A^3, Mr= 390.45, Z = 4, Dc = 1.393 g/cm^3,μ（MoKα） = 0.313 mm^-1, F（000） = 816, the final R = 0.0685 and wR = 0.1685. X-ray analysis reveals that two six-membered rings adopt chair and planar conformations, respectively.
基金This project is supported by the National Natural Science Foundation of China
文摘A new monomer, 3,9-diallyl-3, 9-dibenzyl-1, 5,7,11 - tetraoxa- spiro [5,5] undecane (6) was prepared by the reaction of 2- allyl- 2' - benzyl- propanediol - 1.3 with dibutyltin oxide, and then treated with CS_2. Monomer 4 could be initiated by cationic initiators to give a viscous polymer (white powder in the case of polymerization at 0℃). Upon the NMR and IR spectra of the obtained polymer, the components and their relative amount were estimated. The polymerization mechanism was discussed.
