S-Benzyl-N,N′-diphenyl Isothiouronium Iodide as an Efficient Organocatalyst for the Transfer Hydrogenation of 1,4-Benzoxazines

被引：0

作者：

Kang, Sungmin ^{[1
]}

Yeo, Hyoung Min ^{[1
]}

Kim, Taek Hyeon ^{[1
]}

机构：

[1] Chonnam Natl Univ, Coll Engn, Sch Chem Engn, Gwangju 61186, South Korea

来源：

CHEMISTRYSELECT | 2022年 / 7卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

Isothiouronium salt; organocatalyst; hydrogenation; 1; 4-benzoxazines; 3; 4-dihydro-2H-1; 4-benzoxazine; DIRECT REDUCTIVE AMINATION; ASYMMETRIC HYDROGENATION; BRONSTED ACID; ENANTIOSELECTIVE HYDROGENATION; HANTZSCH ESTERS; ALDEHYDES; CATALYSTS;

D O I：

10.1002/slct.202103392

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study reports on the isothiouronium salt catalyzed transfer hydrogenation of various 3-substituted-2H-1,4-benzoxazines, with Hantzsch esters as a hydrogen source. Transfer hydrogenation of 1,4-benzoxazines has been successfully carried out with small amount of 1 mol% S-benzyl-N,N '-diphenyl isothiouronium iodide as a catalyst. Various 3,4-dihydro-2H-1,4-benzoxazines were obtained in quantitative yield at room temperature.

引用

页数：4

共 40 条

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