Organoytterbium Ate Complexes Extend the Value of Cyclobutenediones as Isoprene Equivalents
作者:Emma Packard、David D. Pascoe、Jacques Maddaluno、Théo P. Gonçalves、David C. Harrowven
DOI:10.1002/anie.201307193
日期:2013.12.2
Changing course: While organolithium and Grignard reagents favor addition to C1 of A (R=Me), the corresponding organoytterbium reagents add to C2 (R=tBu). Computational studies provide insights into the nature of organoytterbium species and their reactivity, and a total synthesis of (−)‐mansonone B illustrates the utility of the method in terpenoid synthesis. Tf=trifluoromethanesulfonyl.
改变方向:虽然有机锂和格氏试剂有利于A (R=Me)的 C1 上的加成,但相应的有机镱试剂会加成到 C2 (R= t Bu) 上。计算研究提供了对有机镱物种的性质及其反应性的见解,(−)-mansonone B 的全合成说明了该方法在萜类化合物合成中的实用性。Tf=三氟甲磺酰基。