5-dimethyl-2-cyclopentenones allows an efficient entry to the bicyclo[3.1.0]hexan-2-one skeleton which proved to be a valuable precursor of vinyl cyclopropane carboxylic acids. Application to the synthesis of (d,l)- and (d)-(cis)-chrysanthemic acid is described.
硫酰化物与适当的4-官能化的5,5-二甲基-
2-环戊烯酮进行反应可以有效地进入双环[3.1.0]己-2-酮骨架,该骨架被证明是
乙烯基环丙烷羧酸的宝贵前体。描述了在(d,l)-和(d)-(顺式)-菊
氨酸的合成中的应用。