AbstractSeveral triglycerides were synthesized with an iodoaroyl group. Intramolecular radical chain transfer chlorinations were conducted that resulted in the associated pair of fatty acids of the triglyceride becoming chlorinated. The distribution of monochlorinated species was similar to that obtained by direct radical chlorination of the relevant fatty acid methyl esters. Functionalization was, as expected, away from the carboxylate group but gave no indication that either alignment of chains or the constraints of an intramolecular process could limit the manifold of products of the reaction. To gauge the effect on halogenation of a structure, bearing more than one electron‐withdrawing group, methyl oleate was converted to thebis trifluoroacetate of methyl 9,10‐dihydroxystearate. No products of chlorination on carbons 2–8 were observed.
摘要 合成了几种带有碘代芳酰基的甘油三酯。通过分子内自由基链转移氯化反应,使甘油三酯中相关的一对脂肪酸发生氯化。单氯化物种的分布与相关脂肪酸甲酯直接自由基氯化的结果相似。正如预期的那样,官能化远离羧酸基,但没有迹象表明链的排列或分子内过程的限制会限制反应产物的多样性。为了衡量含有一个以上电子抽取基团的结构对卤化的影响,将油酸甲酯转化为 9,10-二羟基硬脂酸甲酯的双三氟乙酸盐。在碳 2 至 8 上没有观察到氯化产物。