The potential of di-(–)-isobornyl diazenedicarboxylate (2) to act as a
chiral azo-enophile in asymmetric ene reactions was investigated. Azo-enophile
(2) was treated with trans-hex-3-ene and cyclohexene in
the presence of tin(IV) chloride affording the ene adducts (4) and (5)
respectively; however, no diastereoselectivity was observed. The synthesis of
the novel chiral diazanedicarboxylates (12), (17) and (19) and the
unsuccessful attempts to transform them into the chiral azo-enophiles (11),
(16) and (19) bearing chiral oxazolidinone, diacetone-D-glucose and
pantolactone chiral auxiliaries are also described.
研究了重氮二甲酸二(-)-异冰片酯(2)在不对称烯烃反应中作为手性偶氮亲和剂的潜力。
不对称烯烃反应中作为手性偶氮亲烯剂的潜力进行了研究。亲氮
(2) 与反式-3-己烯和环己烯进行处理。
在氯化锡(IV)的存在下,亲氮烯(2)与反式-己-3-烯和环己烯进行处理,分别得到烯加合物(4)和(5)。
但没有观察到非对映选择性。合成
新型手性重氮二甲酸酯 (12)、(17) 和 (19) 的合成以及将它们转化为
将它们转化为手性偶氮亲烯化合物 (11) 的尝试未获成功、
(16)和(19)的手性偶氮亲烯化合物。
还描述了将它们转化为带有手性噁唑烷酮、二丙酮-D-葡萄糖和泛酸内酯手性助剂的手性偶氮亲烯化合物 (11)