Tetrahedron letters

Carbonylation of alkynols catalyzed by Pd (II)/2-PyPPh 2 dissolved in organic solvents and in ionic liquids: a facile entry to α-methylene γ-and δ-lactones

CS Consorti, G Ebeling, J Dupont

文献索引：Consorti, Crestina S; Ebeling, Gunter; Dupont, Jairton Tetrahedron Letters, 2002 , vol. 43, # 5 p. 753 - 755

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被引用次数: 59

摘要

The carbonylation of terminal 3-alkyn-1-ols and 1-alkyn-4-ols by Pd (OAc) 2 associated with 2-(diphenylphosphino) pyridine (2-PyPPh2) dissolved in organic solvents or in 1-n-butyl-3- methyl imidazolium ionic liquids affords quantitatively and selectively exo-α-methylene γ- and δ-lactones, respectively. In the case of the reactions performed in ionic liquids (biphasic conditions), the lactones were isolated by simple distillation and the ionic catalyst solution ...