《Electrochemical Annulation-Iodosulfonylation of 1,5-Enyne-containing para-Quinone Methides (p-QMs) to Access (E)-Spiroindenes》 was written by Zuo, Hang-Dong; Hao, Wen-Juan; Zhu, Chi-Fan; Guo, Cheng; Tu, Shu-Jiang; Jiang, Bo. Product Details of 98-60-2 And the article was included in Organic Letters in 2020. The article conveys some information:
A new electrochem. three-component annulation-iodosulfonylation of 1,5-enyne-containing para-quinone methides (p-QMs) has been established by using available arylsulfonyl hydrazides and potassium iodide under environmentally benign conditions. The electrosynthesis offers sustainable and efficient access to construct spirocyclohexadienone-containing (E)-indenes without any addnl. catalyst or oxidant through a sulfonyl-radical-triggered 1,6-addition and an I+-mediated ipso-cyclization cascade. Notably, potassium iodide plays the triple role of an electrolyte, a redox catalyst, as well as an iodination reagent. The experimental part of the paper was very detailed, including the reaction process of 4-Chlorobenzenesulfonyl chloride(cas: 98-60-2Product Details of 98-60-2)
4-Chlorobenzenesulfonyl chloride(cas: 98-60-2) belongs to organochlorine compounds. Alkanes and aryl alkanes may be chlorinated under free radical conditions, with UV light. However, the extent of chlorination is difficult to control. Aryl chlorides may be prepared by the Friedel-Crafts halogenation, using chlorine and a Lewis acid catalyst.Product Details of 98-60-2
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics