[EN] PROTECTED ORGANOBORONIC ACIDS WITH TUNABLE REACTIVITY, AND METHODS OF USE THEREOF<br/>[FR] ACIDES ORGANOBORONIQUES PROTÉGÉS À RÉACTIVITÉ AJUSTABLE ET LEURS PROCÉDÉS D'UTILISATION
申请人:UNIV ILLINOIS
公开号:WO2017027435A1
公开(公告)日:2017-02-16
Disclosed are a range of protected organoboronic acid reagents useful in the modular assembly of complex organic compounds. The reactivities of the protected organoboronic acid reagents may be varied predictably by changes to the number and identities of their substituents. Also disclosed are methods of using the protected organoboronic acid reagents in the synthesis of organic compounds.
The reactions of p-toluenesulfonylmethyl isocyanide (TosMIC) with α-bromocarbonyl compounds leading efficiently to α-sulfonated ketones, esters, and amides were reported, in which an explicit new role of TosMIC as the sulfonylating agent was uncovered for the first time. Mechanistic study by control experiments and DFT calculations suggested that the reaction is initiated by Cu(OTf)2-catalyzed hydration
的反应p -toluenesulfonylmethyl胩(TOSMIC)用α-溴代化合物有效地导致α-磺化酮,酯和酰胺的报道,其中TOSMIC作为磺酰化剂的显式的新角色被揭露首次。通过对照实验和DFT计算进行的机理研究表明,该反应是由Cu(OTf)2催化的TOSMIC水合引发的,形成了甲酰胺中间体,该中间体在Cs 2 CO 3添加剂的介导下易于进行C-S键裂解。
Transfer Hydro-dehalogenation of Organic Halides Catalyzed by Ruthenium(II) Complex
A simple and efficient Ru(II)-catalyzed transfer hydro-dehalogenation of organic halides using 2-propanol solvent as the hydride source was reported. This methodology is applicable for hydro-dehalogenation of a variety of aromatic halides and α-haloesters and amides without additional ligand, and quantitative yields were achieved in many cases. The potential synthetic application of this method was
Protected organoboronic acids with tunable reactivity, and methods of use thereof
申请人:The Board of Trustees of the University of Illinois
公开号:US10844081B2
公开(公告)日:2020-11-24
Disclosed are a range of protected organoboronic acid reagents useful in the modular assembly of complex organic compounds. The reactivities of the protected organoboronic acid reagents may be varied predictably by changes to the number and identities of their substituents. Also disclosed are methods of using the protected organoboronic acid reagents in the synthesis of organic compounds.