39251-01-9Relevant articles and documents
Poly(3,4-dimethyl-5-vinylthiazolium)/DBU-catalyzed thioesterification of aldehydes with thiols
Chung, Junyong,Seo, Ue Ryung,Chun, Supill,Chung, Young Keun
, p. 318 - 321 (2016/02/05)
Poly(3,4-dimethyl-5-vinylthiazolium) was synthesized from 3,4-dimethyl-5-vinylthiazole through free radical polymerization and was examined as polymer precatalysts in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) for the thioesterification of aldehydes with thiols. The poly(5-vinylthiazolium)/DBU had excellent catalytic activity and could be reused 10 times without a considerable loss of activity. To S-um up: Poly(3,4-dimethyl-5-vinylthiazolium) is examined as a polymer precatalyst in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) for the thioesterification of aldehydes with thiols. The poly(5-vinylthiazolium)/DBU system shows excellent catalytic activity and can be reused 10 times without a considerable loss of activity.
Synthesis of thioesters by simultaneous activation of carboxylic acids and alcohols using PPh3/NBS with benzyltriethylammonium tetrathiomolybdate as the sulfur transfer reagent
Gopinath, Purushothaman,Vidyarini, Ravindran Sasitha,Chandrasekaran, Srinivasan
experimental part, p. 6043 - 6047 (2010/03/25)
A new and simple route for the synthesis of thioesters starting from carboxylic acids and alcohols is reported by using tetrathiomolybdate as the key sulfur transfer reagent, Triphenylphosphane and N-bromosuccinimide were used for the activation of the ca
Easily prepared azopyridines as potent and recyclable reagents for facile esterification reactions. An efficient modified mitsunobu reaction
Iranpoor, Nasser,Firouzabadi, Habib,Khalili, Dariush,Motevalli, Somayeh
, p. 4882 - 4887 (2008/09/21)
(Chemical Equation Presented) The 2,2′-, 3,3′-, and 4,4′-azopyridines (azpy) and their alkyl pyridinium ionic liquids were studied as a new class of electron-deficient reagents for Mitsunobu esterification reactions. Among these compounds, 4,4′-azopyridine was found to be the most suitable one for esterification and thioesterification reactions. This new reagent promises to provide general and complementary solutions for separation problems in Mitsunobu reactions without restricting the reaction scope and facilitates the isolation of its hydrazine byproduct. The pyridine hydrazine byproduct can be simply recycled to its azopyridine by an oxidation reaction.