Efficient synthesis of chiral Δ2-1,3,4-thiadiazolines from α-pinene and verbenone
作者:Gabriela P. Sarmiento、Pablo D. Rouge、Lucas Fabian、Daniel Vega、Rosa M. Ortuño、Graciela Y. Moltrasio、Albertina G. Moglioni
DOI:10.1016/j.tetasy.2011.10.016
日期:2011.11
The synthesis of chiral cyclobutane 1,3,4-thiadiazoline derivatives starting from (−)-α-pinene and (−)-verbenone was studied. The diastereoisomeric excesses of the products obtained depended strongly upon the starting chiral ketone. The stereochemical assignments of the synthesized compounds were performed by NMR spectroscopy, X-ray analysis, and theoretical calculations.
研究了以(-)-α-pine烯和(-)-马洛酮为原料的手性环丁烷1,3,4-噻二唑啉衍生物的合成。所得产物的非对映异构体过量在很大程度上取决于起始手性酮。合成化合物的立体化学归属是通过NMR光谱,X射线分析和理论计算完成的。