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1,2,3,4,5,6,7,8-OCTAHYDROBENZO[4,5]THIENO[2,3-D]PYRIMIDINE-2,4-DIONE synthesis

11synthesis methods
ethyl 2-(carbamoylamino)-4,5,6,7-tetrahydro-1-benzothiophene-3-carboxylate

100068-52-8
3 suppliers
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1,2,3,4,5,6,7,8-OCTAHYDROBENZO[4,5]THIENO[2,3-D]PYRIMIDINE-2,4-DIONE

27285-09-2
8 suppliers
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Yield:27285-09-2 91%

Reaction Conditions:

with potassium hydroxide for 1 h;Heating;

References:

Wamhoff, Heinrich;Ertas, Muemtaz [Synthesis,1985,# 2,p. 190 - 194]