Hantzsch esters have been explored as powerful biomimetic reductants because they overcome some limitations encountered with traditional reductive reagents, such as hydrogen gas/metal and metal hydrides. 3 The selective reduction of nitroalkenes into nitroalkanes using Hantzsch esters has done by the combination of effective catalysts, such as acetic acid, 2c silica gel, 2d and 2g and thiourea. 2h and 5c Recently, we reported S-benzyl isothiouronium chloride ...
[Chikashita, Hidenori; Nishida, Shuichi; Miyazaki, Makoto; Morita, Yasuhiro; Itoh, Kazuyoshi Bulletin of the Chemical Society of Japan, 1987 , vol. 60, # 2 p. 737 - 746]