作者:Haixiang Gao、Chengfeng Ye、Rolf W. Winter、Gary L. Gard、Michael E. Sitzmann、Jean’ne M. Shreeve
DOI:10.1002/ejic.200600098
日期:2006.8
New quaternary salts of pentafluorosulfanyl-substituted (SF5) N-methylimidazole (1), 4-amino-1,2,4-triazole (3) or pyridine (5) were prepared and characterized. Most of the salts exhibit good thermal stabilities and low melting points placing them in the ionic liquid class. Their densities range between 1.4 and 1.8 g/cm3. The standard enthalpies of formation for the new salts were calculated by the
The addition of SF5Br to acrylic esters: pathways to γ-SF5-propane derivatives
作者:R. Winter、G.L. Gard
DOI:10.1016/s0022-1139(99)00249-3
日期:2000.3
Reaction of SF5Br with various acrylicesters, CH2CHCOOR, where R = C2H5/C(CH3)3 and CH2C(CH3)COOCH3, CH2C(CH2Cl)-COOC2H5, CH2C(n-C7H15)COOC2H5 resulted in 1:1 adducts with the SF5-group attached to the CH2 portion of the acrylicester. These adducts were converted to halogen-free saturated esters, an alcohol [SF5(CH2)3OH] an acid [SF5(CH2)2COOH] and a bromide [SF5(CH2)3Br]. Therefore, a method
Halogen displacement chemistry with silver and alkali metal salts: Preparation of SF5-esters, alcohols, aliphatic olefins, acids and an iodide
作者:R.W. Winter、G.L. Gard
DOI:10.1016/j.jfluchem.2006.06.010
日期:2006.9
It has been found that treatment of SF5-alkyl halides, especially SF5(CH2)2Br, with silver salts such as CH3C(O)OAg, p-CH3C6H4SO3Ag, CF3SO3Ag and AgNO3 provides convenient pathways for preparing the following ester compounds: SF5CH2CH2R (R = CH3COO, TosO, CF3SO3, NO3), SF5(CH2)3OTos, and SF5(CF2)4(CH2)2OAc. Important derivatives prepared from these esters include SF5(CH2)2OH; SF5(CF2)4(CH2)2OH. Several