A Novel Synthesis of Cyclic Polythioethers Using Liquid-Liquid Phase-Transfer Catalysis
作者:Toshio Takido、Masaharu Toriyama、Kazuhiro Ogura、Haruo Kamijo、Shigeyasu Motohashi、Manabu Seno
DOI:10.1080/10426500307887
日期:2003.6
The synthesis of cyclic polythioethers has been achieved by the reactions of dithiols with alkyl dihalides. Thiols are not only hard to handle owing to their unpleasant smell, but also they are easily oxidizable, thus it is not easy to obtain various dithiols. However, we have developed a procedure for the preparation cyclic polythioethers by the reaction of dithioiminium salts with alkyl dihalides
A new synthesis of thiacyclophanes from thiolacetates
作者:Reginald H Mitchell、Ji Zhang
DOI:10.1016/0040-4039(94)02491-s
日期:1995.2
A new cyclization to obtain good yields of thiacyclophanes is described, which is particularly useful when one of the components cannot be obtained as the halide.