18673-13-7Relevant articles and documents
Thia-Michael addition using cheap and odorless S-alkylisothiouronium salts as thiol equivalents in water
Zhao, Yan,Ge, Ze-Mei,Cheng, Tie-Ming,Li, Run-Tao
, p. 1529 - 1532 (2007)
S-Alkylisothiouronium salt has been found to be a non-toxic, odorless and simply operational alternative of thiol for the thia-Michael addition with electron-deficient olefins. The reactions were carried out under alkaline conditions in water at room temperature within 5-20 minutes to afford the expected products in good to excellent yields. Georg Thieme Verlag Stuttgart.
Borax as an efficient metal-free catalyst for hetero-Michael reactions in an aqueous medium
Hussain, Sahid,Bharadwaj, Saitanya K.,Chaudhuri, Mihir K.,Kalita, Harjyoti
, p. 374 - 378 (2007/10/03)
Borax, a naturally occurring material, very efficiently catalyzed the conjugate addition of thiols, dithiols and amines to α,β-unsaturated ketones, nitriles, amides, aldehydes and esters in an aqueous medium to afford the corresponding Michael adducts in good yields at room temperature. Recycling of the catalyst and scaling up of the reactions are important attributes of this catalysis. The reactions of thiols and dithiols were relatively more facile than those of the corresponding amines. Wiley-VCH Verlag GmbH & Co. KGaA, 2007.
CsF-Celite, an efficient solid state reagent for the syntheses of thioesters and thioethers
Shah, Syed T. A.,Khan, Khalid M.,Hussain, Hidayat,Hayat, Safdar,Voelter, Wolfgang
, p. 1583 - 1589 (2007/10/03)
Coupling reactions of a number of aliphatic, aromatic, and heterocyclic compounds bearing an acidic hydrogen atom attached to sulfur, with alkyl, acyl, benzyl, or benzoyl halides in acetonitrile with cesium fluoride-Celite are described. This procedure is convenient, efficient, and practical for the preparation of thioethers and thioesters. Springer-Verlag 2005.