[EN] SUBSTITUTED BENZIMIDAZOLE COMPOUND, AND COMPOSITION CONTAINING SAME AND USE THEREOF [FR] COMPOSÉ DE BENZIMIDAZOLE SUBSTITUÉ, COMPOSITION LE CONTENANT ET UTILISATION ASSOCIÉE [ZH] 取代的苯并咪唑类化合物及包含该化合物的组合物及其用途
The regioselective hydroboration of aliphatic internal alkenes remains a great challenge. Reported herein is an iridium‐catalyzed hydroboration of aliphatic internal alkenes, providing distal‐borylated products in good to excellent yields with high regioselectivity (up to 99:1). We also demonstrate that the C−B bond of the distal‐borylated product can be readily converted into other functional groups
脂族内部烯烃的区域选择性氢硼化仍然是一个巨大的挑战。本文报道的是铱催化的脂肪族内部烯烃的硼氢化,可提供高至选择性的高至高产率(高达99:1)的远端硼化产物。我们还证明了远端硼化产品的C-B键可以很容易地转化为其他官能团。DFT计算表明反应通过意想不到的Ir III / Ir V循环进行。
Imino-oxy Acetic Acid Dealkylation as Evidence for an Inner-Sphere Alcohol Intermediate in the Reaction Catalyzed by Peptidylglycine α-Hydroxylating Monooxygenase
作者:Neil R. McIntyre、Edward W. Lowe、David J. Merkler
DOI:10.1021/ja902716d
日期:2009.7.29
stereospecific hydroxylation of a glycyl alpha-carbon in a reaction that requires O(2) and ascorbate. Subsequent dealkylation of the alpha-hydroxyglycine by another enzyme, peptidylamidoglycolate lyase (PAL. EC 4.3.2.5), yields a bioactive amide and glyoxylate. PHM is a noncoupled, type IIdicopper monooxygenase which activates O(2) at only a single copper atom, Cu(M). In this study, the PHM mechanism was probed