Some 2-ethoxalyl-4-en-3-one was treated with N-halo-succinimide in pyridine to give the corresponding 2α-halo-4-en-3-one in a good yield. Direct chlorination of testosterone acetate with sulfuryl chloride (1 mole) gave a small amount of 2α-chlorotestosterone acetate in dry beozene or dry ether, and with sulfuryl chloride (excess) gave mainly 2α, 4-dichlorotestosterone acetate in dry benzene and mainly 2α, 6β-dichlorotestosterone acetate in dry ether. These observations were confirmed by the syntheses of their related compounds through the unequivocal routes.
一些2-乙草基-4-en-3-酮在
吡啶中用N-卤代琥珀
酰亚胺处理,以良好的收率得到相应的2α-卤代-4-en-3-酮。用
硫酰氯(1摩尔)直接
氯化
乙酸睾酮,在无
水苯或无
水乙醚中得到少量2α-
氯睾酮乙酸酯,用
硫酰氯(过量)在无
水苯中主要得到2α,4-二
氯睾酮乙酸酯,主要是2α, 6β-二
氯睾酮乙酸酯的无
水乙醚溶液。通过明确的途径合成相关化合物证实了这些观察结果。