Ultrasound-assisted synthesis of substituted guanidines using 1H-pyrazole-1-carboxamidine and S-methylisothiouronium sulfate under solvent-free conditions

被引：6
|
作者：
Fujita, Mitsue [1 ]
Furusho, Yoshio [1 ]
机构：
[1] Shiga Univ Med Sci, Dept Chem, Otsu, Shiga 5202192, Japan
来源：
TETRAHEDRON | 2018年 / 74卷 / 32期
关键词：
Guanidine; Solvent-free; Ultrasound 1H-pyrazole-1-carboxamidine hydrochloride; S-methylisothiouronium sulfate; ORGANIC-SYNTHESIS; CHEMISTRY; AMINES; ORGANOCATALYSIS; HYDROCHLORIDE; DERIVATIVES; MICROWAVE; BIOLOGY; REAGENT; POWER;
D O I：
10.1016/j.tet.2018.06.057
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
We have investigated ultrasound-assisted synthesis of guanidine derivatives using 1H-Pyrazole-1-carboxamidine (PyzCA) and S-substituted isothiouronium sulfate (MeITU). The guanylations of several amines are promoted by ultrasound sonication under solvent-free conditions, and proceed under mild conditions. It is of particular interest that the guanylations do not require bases in most cases. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4339 / 4342
页数：4
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