Tetrabutylammonium fluoride: A powerful catalyst for the regioselective opening of epoxides with thiols
Tetrabutylammonium fluoride (1) catalyses under mild conditions the opening of epoxides 2a-k with thiols 3-6 to produce the corresponding β-hydroxy thioethers 7-11 in excellent yields (88-100%) and with high regioselectivity. Furthermore, O-protected glyc
Albanese,Landini,Penso
p. 34 - 36
(2007/10/02)
New Catalytic Activity of Polymer-Supported Quaternary Onium Salts. Regioselective Addition Reaction of Oxiranes with Active Esters Catalyzed by Insoluble Polystyrene-Bound Quaternary Ammonium and Phosphonium Salts
A new regioselective addition reaction of oxiranes 15-17 with active esters 18 and 19 was carried out to give the adducts 20a-f using quaternary onium salts on cross-linked polystyrene beads.The catalytic activity of the polystyrene beads was evalulated f
Regioselective Reaction of Oxiranes with S-Phenyl Thioesters Catalyzed by Quaternary Onium Salts or Crown Ether-Metal Salt Complexes
Regioselective addition reactions of 2-substituted oxiranes with S-phenyl thioesters gave 2-aceyloxy-1-phenylthio derivatives in high yield using some 18-crown-6-metal complexes as well as tetrabutylammonium salts as a catalyst under relatively mild condi
Iizawa, Takashi,Goto, Akira,Nishikubo, Tadatomi
p. 597 - 598
(2007/10/02)
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