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34790-24-4

4-methylquinazolin-2(1H)-one synthesis

5synthesis methods
Urea, N-[2-[2-(trimethylsilyl)ethynyl]phenyl]-

685110-87-6
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Yield:34790-24-4 75%

Reaction Conditions:

Stage #1: N-[2-[(trimethylsilanyl)ethynyl]phenyl]ureawith trifluorormethanesulfonic acid in 1,2-dichloro-ethane;Reflux;
Stage #2: with sodium hydrogencarbonate in water;ethyl acetate;1,2-dichloro-ethane;

References:

Wang, Honggen;Liu, Lanying;Wang, Yong;Peng, Changlan;Zhang, Jiancun;Zhu, Qiang [Tetrahedron Letters,2009,vol. 50,# 49,p. 6841 - 6843] Location in patent:supporting information; experimental part

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