Novel polysulphur bridged metacyclophanes from the iron-catalysed reaction of bis-(2,4-dimethoxyphenyl) sulphide with disulphur dichloride. Evidence for the cleavage of the carbon–sulphur bond by electrophilic agents
作者:Francesco Bottino、Sebastiano Pappalardo
DOI:10.1039/p19810000718
日期:——
The iron-catalysed reaction of bis-(2,4-dimethoxyphenyl) sulphide (3) with disulphur dichloride (S2Cl2) in dilute chloroform solution has been investigated. Surprisingly, the reaction gives 4,6,11,13,18,20-hexamethoxy-1,2,9,16-tetrathia[2.1.1]metacyclophane (4) as the major product, accompanied by minor amounts of 3,5,10,12,17,19,24,26-octamethoxy-1,8,15,22-tetrathia[1.1.1.1]metacyclophane (5), 4,6
研究了双(2,4-二甲氧基苯基)硫化物(3)与二氯化二硫(S 2 Cl 2)在稀氯仿溶液中的铁催化反应。令人惊讶地,该反应产生了4,6,11,13,18,20-六甲氧基-1,2,9,16-四硫杂[2.1.1]间环phane(4)作为主要产物,并伴有少量的3,5。 ,10,12,17,19,24,26-八甲氧基-1,8,15,22-四硫[1.1.1.1]间环phane(5),4,6,11,13,18,20,25,27-八甲氧基-1,2,9,16,23-pentathia [2.1.1.1]甲基环烷(6)和5,7,14,16-四甲氧基-1,2,3,10,11,12-六硫[3.3] metacyclophane(1)。在1简要讨论了化合物(4)–(6)的H nmr和质谱。化合物(1)和(4)的意外形成表明,碳-硫键发生了不寻常的裂解,这是由亲电物种在硫桥连的低聚物上进行的,随后将涉及的中间体重排