Technology Process of (S)-N-(2,4-difluorobenzyl)-2'-ethyl-9'-hydroxy-1',8'-dioxo-1',2,2',4,4',5,6,8'-octahydrospiro[pyran-3,3'-pyrido[1,2-a]pyrazine]-7'-carboxamide
There total 8 articles about (S)-N-(2,4-difluorobenzyl)-2'-ethyl-9'-hydroxy-1',8'-dioxo-1',2,2',4,4',5,6,8'-octahydrospiro[pyran-3,3'-pyrido[1,2-a]pyrazine]-7'-carboxamide which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
With
lithium chloride;
In
N,N-dimethyl-formamide;
at 100 ℃;
for 2h;
- Guidance literature:
-
Multi-step reaction with 2 steps
1: tetrakis(triphenylphosphine) palladium(0); N-ethyl-N,N-diisopropylamine / methanol; dimethyl sulfoxide / 3 h / 80 °C / 760.05 Torr
2: lithium chloride / N,N-dimethyl-formamide / 2 h / 100 °C
With
tetrakis(triphenylphosphine) palladium(0); N-ethyl-N,N-diisopropylamine; lithium chloride;
In
methanol; dimethyl sulfoxide; N,N-dimethyl-formamide;
- Guidance literature:
-
Multi-step reaction with 7 steps
1.1: lithium aluminium tetrahydride / tetrahydrofuran / 2 h / 0 - 18 °C
2.1: triethylamine / dichloromethane / 16 h / 18 °C
3.1: chloro-N,N,N',N'-bis(tetramethylene)formamidinium hexafluorophosphate; N-ethyl-N,N-diisopropylamine / tetrahydrofuran / 0.67 h / 15 °C
3.2: 16 h / 15 °C
4.1: trifluoroacetic acid / dichloromethane / 4 h / 0 - 16 °C
4.2: 16 h / 80 °C
5.1: N-Bromosuccinimide / dichloromethane / 1 h / 18 °C
6.1: tetrakis(triphenylphosphine) palladium(0); N-ethyl-N,N-diisopropylamine / methanol; dimethyl sulfoxide / 3 h / 80 °C / 760.05 Torr
7.1: lithium chloride / N,N-dimethyl-formamide / 2 h / 100 °C
With
N-Bromosuccinimide; lithium aluminium tetrahydride; tetrakis(triphenylphosphine) palladium(0); chloro-N,N,N',N'-bis(tetramethylene)formamidinium hexafluorophosphate; triethylamine; N-ethyl-N,N-diisopropylamine; trifluoroacetic acid; lithium chloride;
In
tetrahydrofuran; methanol; dichloromethane; dimethyl sulfoxide; N,N-dimethyl-formamide;