Technology Process of N-(3-chloro-2-fluorobenzyl)-9’-hydroxy-cis-3-(methoxymethyl)-2’-methyl-1’,8’-dioxo-1’,2’,3’,8’-tetrahydrospiro[cyclobutane-1,4’-pyrido[1,2-a]pyrazine]-7’-carboxamide
There total 20 articles about N-(3-chloro-2-fluorobenzyl)-9’-hydroxy-cis-3-(methoxymethyl)-2’-methyl-1’,8’-dioxo-1’,2’,3’,8’-tetrahydrospiro[cyclobutane-1,4’-pyrido[1,2-a]pyrazine]-7’-carboxamide which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
With
hydrogenchloride; trifluoroacetic acid;
In
chloroform;
at 20 ℃;
for 3h;
- Guidance literature:
-
Multi-step reaction with 8 steps
1.1: lithium hexamethyldisilazane / tetrahydrofuran; ethylbenzene / 0.38 h / -70 °C / Inert atmosphere
1.2: 0.42 h / Inert atmosphere
2.1: hydrogenchloride; water / ethyl acetate / 1 h / 20 °C
3.1: oxalyl dichloride / chloroform; N,N-dimethyl-formamide / 0.5 h / 20 °C / Cooling with ice
3.2: -50 - 20 °C
4.1: triethylamine / tetrahydrofuran / 2 h / 20 °C / Cooling with ice
4.2: 2 h / 80 °C
4.3: 2 h / 110 °C
5.1: hydrogen bromide / water; 1,4-dioxane / 3 h / 80 °C
6.1: potassium carbonate / N,N-dimethyl-formamide / 2 h / 60 °C
7.1: tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide / dichloromethane / 3.53 h
7.2: 0.5 h / 20 °C
8.1: hydrogenchloride; trifluoroacetic acid / chloroform / 3 h / 20 °C
With
hydrogenchloride; oxalyl dichloride; water; hydrogen bromide; tetra(n-butyl)ammonium hydrogensulfate; potassium carbonate; triethylamine; trifluoroacetic acid; sodium hydroxide; lithium hexamethyldisilazane;
In
tetrahydrofuran; 1,4-dioxane; dichloromethane; chloroform; ethylbenzene; water; ethyl acetate; N,N-dimethyl-formamide;
- Guidance literature:
-
Multi-step reaction with 7 steps
1.1: hydrogenchloride; water / ethyl acetate / 1 h / 20 °C
2.1: oxalyl dichloride / chloroform; N,N-dimethyl-formamide / 0.5 h / 20 °C / Cooling with ice
2.2: -50 - 20 °C
3.1: triethylamine / tetrahydrofuran / 2 h / 20 °C / Cooling with ice
3.2: 2 h / 80 °C
3.3: 2 h / 110 °C
4.1: hydrogen bromide / water; 1,4-dioxane / 3 h / 80 °C
5.1: potassium carbonate / N,N-dimethyl-formamide / 2 h / 60 °C
6.1: tetra(n-butyl)ammonium hydrogensulfate; sodium hydroxide / dichloromethane / 3.53 h
6.2: 0.5 h / 20 °C
7.1: hydrogenchloride; trifluoroacetic acid / chloroform / 3 h / 20 °C
With
hydrogenchloride; oxalyl dichloride; water; hydrogen bromide; tetra(n-butyl)ammonium hydrogensulfate; potassium carbonate; triethylamine; trifluoroacetic acid; sodium hydroxide;
In
tetrahydrofuran; 1,4-dioxane; dichloromethane; chloroform; water; ethyl acetate; N,N-dimethyl-formamide;