Zirconium-Catalyzed Hydroalumination of C═O Bonds: Site-Selective De-<i>O</i>-acetylation of Peracetylated Compounds and Mechanistic Insights
作者:Thibaut Courant、Marine Gavel、Romain M. Q. Renard、Vincent Gandon、Antoine Y. P. Joosten、Thomas Lecourt
DOI:10.1021/acs.joc.1c00060
日期:2021.7.16
An unprecedented hydroalumination of C ═ O bondscatalyzed by zirconocenedichloride is reported herein and applied to the site-selective deprotection of peracetylated functional substrates. A mixed metal hydride, with 1:1 zirconium/aluminum stoichiometry, is also shown to be the reductive species. A catalytic cycle is finally proposed for this transformation with no precedent in the field of zirconium
本文报道了一种前所未有的由二氯化锆催化的 C = O 键的氢铝化,并应用于全乙酰化功能底物的位点选择性脱保护。具有 1:1 锆/铝化学计量比的混合金属氢化物也显示为还原物质。最终为这种转化提出了一种催化循环,这在锆催化领域是没有先例的。