Copper‐Catalyzed Aqueous N−O Bond Cleavage of 2‐Oxa‐3‐Azabicyclo Compounds to Cyclic
<i>cis</i>
‐1,4‐Amino Alcohols
作者:Naoki Yasukawa、Yuya Miki、Marina Kuwata、Hironao Sajiki、Yoshinari Sawama
DOI:10.1002/cssc.202001739
日期:2020.11.6
of 2‐oxa‐3‐azabicyclo compounds and following Cu/C‐catalyzed N−O bond cleavage. The obtained cis‐4‐aminocyclohexenols, derived from cyclohexadiene as a cyclic 1,3‐diene, could be selectively oxidized by using the ruthenium‐on‐carbon (Ru/C) catalyst under oxygen atmosphere to the corresponding 4‐aminocyclohexenones at 50–65 °C or para‐iminoquinones at 100–110 °C as useful reactive synthetic precursors
异质碳铜(Cu)可以有效催化亚硝基双亲烯体与环状1,3-二烯之间的杂Diels-Alder反应制备的2-oxa-3-氮杂双环底物的N-O键裂解/ C)在水性条件下得到相应的环状顺式-1,4-氨基醇衍生物。通过结合原位形成2-氧杂-3-氮杂双环化合物和随后的方法,将本方法用于将亚硝基底物衍生的羟基和氨基直接结合到具有顺式选择性的环状1,3-二烯中Cu / C催化的N-O键裂解。获得的顺式可以通过在氧气气氛下使用碳上钌(Ru / C)催化剂将50-65°C下的钌-碳(Ru / C)催化剂选择性地氧化衍生自环己二烯作为环状1,3-二烯的-4-氨基环己醇或在100-110°C的对亚氨基醌作为有用的反应合成前体。