(R)-methyl 1-isopropyl-7-(methylsulfonyl)-1,2,3,4-tetrahydrobenzo[4,5]imidazo [1,2-a]pyrazine-8-carboxylate synthesis
- Product Name:(R)-methyl 1-isopropyl-7-(methylsulfonyl)-1,2,3,4-tetrahydrobenzo[4,5]imidazo [1,2-a]pyrazine-8-carboxylate
- CAS Number:1456693-55-2
- Molecular formula:C16H21N3O4S
- Molecular Weight:351.42
1456693-01-8
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Yield:-
Steps:
Multi-step reaction with 9 steps
1.1: triethylsilane / 1,2-dichloro-ethane / 36 h / 20 °C / Reflux
2.1: 15% palladium on carbon; hydrogen / methanol / 20 °C
3.1: 20 °C
4.1: sodium hydride / N,N-dimethyl-formamide; mineral oil / 0.5 h / -10 °C / Inert atmosphere
4.2: 0.33 h / -30 - -20 °C
5.1: 1 h / 20 °C
6.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 20 °C
7.1: hydrogen / tetrahydrofuran; methanol; water / 20 °C / 1551.49 Torr
8.1: tin(IV) chloride; triethylamine / dichloromethane / 20 °C
9.1: trifluoroacetic acid / dichloromethane / 3.03 h / 20 °C
References:
WO2013/138565,2013,A1
1685-33-2
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