The synthesis of Unsymmetricaldisulphides by cleaving sulphenamides and sulphenic esters with alkyl- and arylthiosilanes and thiols is reported. Alkyl phenyl disulphides and unsymmetrical diaryl disulphides can be prepared conveniently and in 80–90% yield by the interaction of methyl benzenesulphenate and a thiol. Unsymmetrical dialkyl disulphides result from dimethyl or diethyl disulphide and a thiol
The “thio-Arbuzov” reaction of sulfenate esters with sulfenyl chlorides: Fate of the thiosulfinate product
作者:Charles Brown、Graham R. Evans
DOI:10.1016/s0040-4039(96)02096-5
日期:1996.12
The further reaction of thiosulfinate esters (putative products of the “Thio-Arbuzov” reaction of sulfenate esters with sulfenylchlorides) with sulfenylchlorides and sulfenate esters has been studied. In the former case, sulfinyl chlorides and disulfides are formed. In the latter case sulfinate esters and disulfides are obtained.
A process for preparing a polyarylene thioether, which comprises polymerizing a thiophenol having the formula (I)
and/or a diphenyldisulfide having the formula (II)
wherein R are substituents selected from the group consisting of hydrogen atoms, lower alkyl groups, halogen atoms and lower alkoxy, the groups R may be different from or identical with each other, in the presence of a Lewis acid as a catalyst.
一种制备聚芳基硫醚的工艺,包括在路易斯酸作为催化剂的存在下,聚合具有式(I)的噻吩酚和/或具有式(II)的二苯基二硫醚,其中 R 是选自氢原子、低级烷基、卤素原子和低级烷氧基组成的组的取代基,基团 R 可以彼此不同或相同。
PRODUCTION OF POLYARYLENE THIOETHER
申请人:RESEARCH INSTITUTE FOR PRODUCTION DEVELOPMENT
公开号:EP0402481A1
公开(公告)日:1990-12-19
This invention discloses a method for producing polyarylene thioether by the catalytic oxidative coupling polymerization of at least one compound selected from the group consisting of diaryl disulfides of general formula (I) and thiophenols of general formula (11), wherein R1 to R12 are each as defined in the specification, by using oxygen in the presence of an acid. According to the above method, the reaction proceeds under very mild conditions; the procedure can be simplified; and the starting material and catalyst an available at extremely low cost. Thus, this method is advantageous industrially.