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    • 6. 发明授权
    • Tandem acyl-Claisen rearrangement in the preparation of chiral products
    • 串联酰基Claisen重排在手性产物的制备中
    • US06552226B1
    • 2003-04-22
    • US09670861
    • 2000-09-26
    • David W. C. MacMillan
    • David W. C. MacMillan
    • C07C23300
    • C07D209/48C07D263/14C07D295/185
    • A novel tandem acyl-Claisen rearrangement reaction is provided. An allylic reactant such as an allylic amine or an allylic thioether, having at least two functional groups that enable the reactant to undergo at least two successive Claisen rearrangement reactions, is reacted with an acid chloride in the presence of a Lewis acid catalyst composition composed of a Lewis acid and a second catalyst component selected from the group consisting of tertiary amines and non-nitrogenous bases. The stereochemistry of the reaction product is readily controlled by the positioning and size of substituents on the allylic reactant. The reaction may be carried out on a solid support, i.e., on the surface of a substrate suitable for conducting solid phase chemical reactions.
    • 提供了一种新的串联酰基 - 克莱森重排反应。 具有至少两个能够使反应物经历至少两次连续克莱森重排反应的官能团的烯丙基反应物如烯丙基胺或烯丙基硫醚与酰基氯在路易斯酸催化剂组合物的存在下反应,路易斯酸催化剂组合物由 路易斯酸和选自叔胺和非含氮碱的第二催化剂组分。 反应产物的立体化学通过烯丙基反应物上取代基的定位和大小容易地控制。 反应可以在固体载体上,即在适于进行固相化学反应的基材的表面上进行。