Some common heterocyclic compound, 6579-54-0, name is 2,6-Dichlorobenzenesulfonyl chloride, molecular formula is C6H3Cl3O2S, traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc, below Introduce a new synthetic route. 6579-54-0
General procedure: To a solution of amine 7 (41 mg, 0.1 mmol) indry pyridine (2 mL), substituted benzenesulfonyl chloride (1.52 eq.) was added. The reaction mixturewas kept at r.t. overnight and poured into a mixture of 1 M hydrochloric acid (10 mL) and ethyl acetate(10 mL) while being vigorously stirred. The organic phase was separated and concentrated in vacuo.The residue was dissolved in a mixture of methanol (10 mL) and 5 M sodium hydroxide solution(5 mL) and kept at r.t. for 1 h. The mixture was concentrated in vacuo to remove the methanol andwas diluted with water (3 mL) and ltered. The clear water phase was washed with ethyl acetate(3 mL x 2) and then concentrated hydrochloric acid was added dropwise until pH = 4. The mixturewas filtered to afford the desired sulfonamide 9a-9n as yellow solids (yield: 30-80%).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route 6579-54-0, its application will become more common.
Reference:
Article; Wang, Penghui; Jiang, Lulu; Cao, Yang; Ye, Deyong; Zhou, Lu; Molecules; vol. 23; 6; (2018);,
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