作者:M. A. Kishimba、B. Zwanenburg
DOI:10.1002/recl.19941130103
日期:——
Carba analogues 1, 14, 15 and 16 of Strigol were synthesised in which the vinyl ether oxygen is replaced by methylene. Compound 1 was prepared by the Wittig reaction of ylid 2 with aldehyde 3. Compounds 14, 15 and 16, for which this approach failed, were prepared by reaction of aldehyde 20 with lactones 17, 18 and 19, respectively, using the method of Tanaka et al.35,36, or with phosphonates 32 and
卡巴类似物1,14,15和16 Strigol的合成中的乙烯基醚的氧被亚甲基代替。化合物1是通过基团2与醛3的维蒂希反应制备的。使用Tanaka等人的方法,分别通过醛20与内酯17、18和19的反应来制备该方法失败的化合物14、15和16。35,36或膦酸酯32和33,在Wittig-Horner反应中。随后氧化消除硫醚部分,得到所需产物。