Several new organomettalic isoxazoles, silylated and stannylated in the heterocyclic ring or in a side chain have been made. Their 13CNMR spectra are consistent with the previous conclusions on the electronic effects of MR3 and CH2MR3 (M = Si, Sn) groups, and indicate the importance of the pπ-dπ and σ-π mechanisms in the various ring positions.
已经制备了在杂环或侧链中甲硅烷基化和甲锡烷基化的几种新的有机金属异恶唑。其13 C NMR光谱与对MR的电子效应先前结论是一致的3和CH 2 MR 3(M =的Si,Sn)的基团,并注明的重要性p π - d π在和σ-π机制各种环位置。
NESI R.; RICCI A.; TADDEI M.; TEDESCHI P.; SECONI G., J. ORGANOMETAL. CHEM., 1980, 195, NO 3, 275-283
作者:NESI R.、 RICCI A.、 TADDEI M.、 TEDESCHI P.、 SECONI G.
DOI:——
日期:——
NATALE, N. R., TETRAHEDRON LETT., 1982, 23, N 48, 5009-5012
作者:NATALE, N. R.
DOI:——
日期:——
Selective reduction of isoxazoles with samarium diiodide
作者:Nicholas R. Natale
DOI:10.1016/s0040-4039(00)85559-8
日期:1982.1
Samariumdiiodide is an efficient reagent for the reductive cleavage of the ON bond of isoxazoles. Olefins, esters, and acetals are stable to the reaction conditions, benzylic halides and aldehydes are not.