Nasrollahzadeh, Mahmoud; Nezafat, Zahra; Pakzad, Khatereh; Ahmadpoor, Fatemeh published an article in 2021. The article was titled 《Synthesis of magnetic chitosan supported metformin-Cu(II) complex as a recyclable catalyst for N-arylation of primary sulfonamides》, and you may find the article in Journal of Organometallic Chemistry.Recommanded Product: 4-Chlorobenzenesulfonyl chloride The information in the text is summarized as follows:
Immobilization of a copper complex on the magnetic chitosan bearing metformin ligand was developed through immobilizing structurally defined metformin with long tail of (3-chloropropyl)trimethoxysilane (TMOS). The synthesized Fe3O4-chitosan@metformin-Cu(II) complex (Fe3O4-CS@Met-Cu(II)) were used as an effective, reusable and magnetic catalyst in the N-arylation of different derivatives of primary sulfonamides with arylboronic acids in ethanol. The primary sulfonamides were prepared from the reaction of sulfonyl chlorides with sodium cyanate in water under ultrasonic irradiation Utilizing a wide variety of substrates in EtOH as a green solvent, high yields of the primary and secondary sulfonamides, easy work-up along with the excellent recovery and reusability of the catalyst, make this process a simple, economic and environmentally benign method. The synthesized Fe3O4-CS@Met-Cu(II) were characterized using various techniques such as XRD (X-ray diffraction), EDS (energy-dispersive X-ray spectroscopy), elemental mapping, TEM (transmission electron microscopy), FESEM (field emission SEM), VSM (vibrating sample magnetometer), ICP-MS (inductively coupled plasma mass spectroscopy), TGA (thermogravimetric anal.) and FT-IR (Fourier-transform IR spectroscopy) analyses. The catalyst was recycled and reused 5 times with no considerable loss of catalytic activity. The experimental process involved the reaction of 4-Chlorobenzenesulfonyl chloride(cas: 98-60-2Recommanded Product: 4-Chlorobenzenesulfonyl chloride)
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.Recommanded Product: 4-Chlorobenzenesulfonyl chloride
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics