Synthesis of Farnesol Analogues through Cu(I)-Mediated Displacements of Allylic THP Ethers by Grignard Reagents
作者:Mark F. Mechelke、David F. Wiemer
DOI:10.1021/jo990161p
日期:1999.6.1
The synthesis of a family of farnesol analogues, incorporating aromatic rings, has been achieved in high yields through the development of a regioselective coupling of allylic tetrahydropyranyl ethers with organometallic reagents. The allylic THP group is displaced readily by Grignard reagents in the presence of Cu(I) halides but is stable in the absence of added copper. Thus, an allylic THP group
通过开发烯丙基四氢吡喃基醚与有机金属试剂的区域选择性偶联,已经高收率地合成了带有芳环的法呢醇类似物家族。在卤化铜(I)存在下,格利雅试剂容易使烯丙基THP基团置换,但在不添加铜的情况下稳定。因此,取决于反应条件,烯丙基THP基团可以履行其传统的保护基或离去基团的作用。还使用该方法完成了(2E,6E)-10,11-二氢法尼醇的改进合成,并对THP醚置换的反应性和区域选择性进行了一些初步研究。