Selective addition of Grignard reagents to 2,3-O-isopropylidene bis-Weinreb tartaric acid amide
作者:James McNulty、Veronika Grunner、Justin Mao
DOI:10.1016/s0040-4039(01)01085-1
日期:2001.8
Controlled addition of Grignard reagents to tartaric acid derived bis-Weinreb amide 3 provides a facile, direct entry to desymmetrized 1,4-functionalized-syn-2,3-diol intermediates 4 and to C2-symmetrical 1,4-diketones 5. The synthetic versatility of this method is exemplified by short syntheses of the natural plant growth regulator 10 and the synthetically valuable cyclooctene derivative 13.
格氏试剂对酒石酸衍生的双-Weinreb酰胺3的受控添加提供了一种容易的,直接进入去对称的1,4-官能化的syn -2,3-二醇中间体4和C 2对称的1,4-二酮5的方法。该方法的合成多功能性由天然植物生长调节剂10和合成有价值的环辛烯衍生物13的短合成例示。