作者:Miguel J. Dabdoub、Tania M. Cassol
DOI:10.1016/0040-4020(95)00840-5
日期:1995.11
Methodologies for the total control on the synthesis of E, Z or 1,1-dissubstituted vinylic tellurides are described. Tellurobutadienes bearing the butyltellurium moiety at carbon 2 or at carbon 1 with E or Z configuration at the tellurium containing double bond were also obtained. Addition of diisobutylaluminum butyltellurolate to terminal alkynes resulted in the formation of 1-(butylteluro)-1-(organyl)
描述了对E,Z或1,1-取代的乙烯基碲化物的合成进行总体控制的方法。还获得在碳2或在碳1上带有丁基或碲构型的碲脲丁二烯,该碲在含碲的双键处具有E或Z构型。在末端炔烃中添加丁基碲铝酸二异丁基铝导致形成1-(丁基teluro)-1-(有机基)乙烯,产率为45%至75%。Al / Te在乙烯基丙氨酸上与丁基碲基溴化物/ LiCl的交换反应以50-60%的收率提供了E构型的异构体。通过乙炔化碲化物的水铝化,可以在30-51%的收率下获得形成双键的Z构型的乙烯基碲化物。