A novel method for metal‐free oxothiolation of ynamides to construct oxazolidine‐2,4‐diones bearing sulfur‐substituted quaternary carbonatoms has been developed. It represents a rare C−O bond cleavage of ynamides, as well as a facile and tandem approach for the formation of C−O, C−S, and C−Cl bonds. This redox‐neutral protocol can be applied to the synthesis of multisubstituted oxazolidine‐2,4‐diones
tetrasubstituted alkynes. Preliminary mechanistic investigations revealed a plausible radicalprocess involving a sulfur‐centered radical intermediate via iron‐mediated homolysis of the ClS bond. The resulting chlorothiolation adducts can be readily transformed to the structurally complex alkenyl sulfides by cross‐coupling reactions. The present reaction can also be applied to the complementary synthesis of the
Abstract A simple and convenient method for the synthesis of thiophosphates by coupling of phosphites with thiols under mild conditions has been developed. The reactions were promoted by trichloroisocyanuricacid (TCCA) and were carried out at room temperature in a one-pot two-step procedure within 20 min. A variety of substrates was tolerated in this method. Notably, both aryl and alkyl thiols could
[EN] METHODS FOR PREPARING FLUOROALKYL ARYLSULFINYL COMPOUNDS AND FLUORINATED COMPOUNDS THERETO<br/>[FR] PROCÉDÉS DE PRÉPARATION DE COMPOSÉS FLUOROALKYLE ARYLSULFINYLÉS ET COMPOSÉS FLUORÉS APPARENTÉS
申请人:IM & T RES INC
公开号:WO2010022001A1
公开(公告)日:2010-02-25
Novel preparative methods for fluoroalkyl arylsulfinyl compounds are disclosed. Fluorinated compounds as useful fluorinated compounds, intermediates, or builing blocks are disclosed. Useful applications of the fluoroalkyl arylsulfinyl compounds are shown.