Tetrahedron letters

Direct synthesis of dithioketals from N, N-dialkylhydrazones

E Díez, AM López, C Pareja, E Martín, R Fernández…

文献索引：Diez, Elena; Lopez, Ana M.; Pareja, Carmen; Martin, Eloisa; Fernandez, Rosario; Lassaletta, Jose M. Tetrahedron Letters, 1998 , vol. 39, # 43 p. 7955 - 7958

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被引用次数: 25

摘要

Direct dithioketalisation of N, N-dialkylhydrazones promoted by BF3· Et2O or p-TsOH and 1, 2-ethanedithiol in dry medium affords the corresponding dithiolanes in nearly quantitative yields. A variety of hydrazones derived from several kinds of aldehydes (aliphatic, aromatic, and α, β-unsaturated) and hydrazines [N, N-dimethylhydrazine, 1-aminopyrrolidine, and (S)- 1-amino-2-(methoxymethyl) pyrrolidine (SAMP)] were reacted, indicating the generality of ...