Organocatalytic Approach for Transfer Hydrogenation of Quinolines, Benzoxazines and Benzothiazines
作者:Xiang Qiao、Zongbi Bao、Huabin Xing、Yiwen Yang、Qilong Ren、Zhiguo Zhang
DOI:10.1007/s10562-017-2061-1
日期:2017.7
AbstractThis study reports on the thiourea dioxide catalyzed transfer hydrogenation of diverse C=N–containing heterocyclic compounds with Hantzsch ester as the hydrogen source. With this cost effective and readily available catalyst, a wide range of 2-substituted quinolines, 3-substituted-2H-1,4-benzoxazines and 3-substituted-2H-1,4-benzothiazines were efficiently reduced to the corresponding tetrahydroquinolines
摘要 本研究报道了二氧化硫脲催化多种含 C=N 杂环化合物以 Hantzsch 酯为氢源的转移氢化。使用这种具有成本效益且易于获得的催化剂,广泛的 2-取代喹啉、3-取代-2H-1,4-苯并恶嗪和 3-取代-2H-1,4-苯并噻嗪被有效地还原为相应的四氢喹啉、二氢-2H-苯并恶嗪和二氢-2H-苯并噻嗪在温和条件下。图形摘要本研究报告了二氧化硫脲催化的 2-取代喹啉、3-取代-2H-1,4-苯并恶嗪和 3-取代-2H-以 Hantzsch 1,4-二氢吡啶为氢源的 1,4-苯并噻嗪。