Ruck Rebecca T, Bergman Robert G
Department of Chemistry and Center for New Directions in Organic Synthesis, University of California, Berkeley, Berkeley, California 94720.
Organometallics. 2004 May 10;23(10):2231-2233. doi: 10.1021/om0497994.
Electron-deficient imines are shown to insert into the zirconium-carbon bond of azazirconacyclobutenes to generate new six-membered ring metallacycles. On heating, these expanded zirconacycles undergo a retro-[4 + 2] cycloaddition to generate alpha,beta-unsaturated imines in excellent yields and novel, fully characterized electron-deficient imidozirconocene complexes.
缺电子亚胺可插入氮杂锆环丁烯的锆-碳键中，生成新的六元环金属环化物。加热时，这些扩环锆环化物会发生逆-[4 + 2]环加成反应，以优异的产率生成α,β-不饱和亚胺以及新型的、经充分表征的缺电子亚胺基锆茂配合物。
