Cao Sheng, F. Yu
2005
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Journal
Chinese Journal of Applied Chemistry
Abstract
In the presence of phase transfer catalyst tetrabutylammouium bromide and with the mixture of NaOH(or KOH) and K 2 CO 3 powder as base, ethyl acetate as solvent, 2 \[ N (tert butoxycarbonyl)amino\] thiophene , 2 \[ N (tert butoxycarbonyl)amino\] 5 methylthiophene and diethyl N \[5 \[ N (tert butoxycar bonyl)amino\] 2 thenoyl\]