Catalyst-Free Chemoselective Synthesis of 3,4-Dihydroquinazoline-2-thiones and 2‑Imino[1,3]benzothiazines
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下载链接：
https://figshare.com/articles/dataset/Catalyst-Free_Chemoselective_Synthesis_of_3_4-Dihydroquinazoline-2-thiones_and_2_Imino_1_3_benzothiazines/3757059
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资源简介：
A solvent-controlled
catalyst-free chemoselective reaction was
developed. Both 3,4-dihydroquinazoline-2-thiones and 2-imino[1,3]benzothiazines
could be efficiently constructed by the reaction of 2-amino chalcones
with isothiocyanates via two different chemoselective reactions depending
on the solvents. The reaction was modulated by the solvents to proceed
via either aza-Michael addition or thia-Michael addition as the major
reaction with excellent yields.
创建时间：
2016-10-31
