In 2022,Lv, Honggui; Xu, Xinyue; Li, Jing; Huang, Xiaobo; Fang, Guoyong; Zheng, Lifei published an article in Angewandte Chemie, International Edition. The title of the article was 《Mechanochemical Divergent Syntheses of Oxindoles and α-Arylacylamides via Controllable Construction of C-C and C-N Bonds by Copper and Piezoelectric Materials》.Synthetic Route of C4H3ClO2S2 The author mentioned the following in the article:
The divergent syntheses of α-arylacylamides Ar(C)R1R2C(O)NHAr/Alkyl (Ar = Ph, 2,3-dihydro-1-benzofuran-5-yl, naphthalen-1-yl, thiophen-2-yl, etc.; R1 = Me, H; R2 = Me, F; R1R2 = cyclobutyl; Alkyl = Me, 2-methylpropyl, butyl) and oxindoles I (R3 = Me; R4 = Me; R3R4 = cyclobutyl; Alkyl = Me, 2-methylpropyl) via mechanoredox chem. by using easily accessible α-bromo N-sulfonyl amides ArS(O)2(N)alkylC(O)CR2R3X as starting materials were present. The system consists of a catalytic amount of CuII precatalyst and piezoelec. materials. The highly polarized BaTiO3 or PbTiO3 under mech. agitation can act as an electron donor to realize the recycling of CuII and CuI. Control experiments and d. functional theory calculations have been performed to support the proposed mechanistic rationale for the cascade reactions.Thiophene-2-sulfonyl chloride(cas: 16629-19-9Synthetic Route of C4H3ClO2S2) was used in this study.
Thiophene-2-sulfonyl chloride(cas: 16629-19-9) is a member of sulfonyl chlorides. Sulfonyl chlorides are reactive sulfonic acid derivatives similar in properties and reactivity to acid chlorides of carboxylates. The sulfonic acid group, however, is a highly hindered molecule, containing a tetrahedral configuration of substituents. Synthetic Route of C4H3ClO2S2
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics