Technology Process of (S)-3-[5-(3,5-dichloro-4-fluoro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-5,6-dihydro-4H-cyclopenta[c]thiophene-1-carboxylic acid [(2,2-difluoro-ethylcarbamoyl)-methyl]-amide
There total 13 articles about (S)-3-[5-(3,5-dichloro-4-fluoro-phenyl)-5-trifluoromethyl-4,5-dihydro-isoxazol-3-yl]-5,6-dihydro-4H-cyclopenta[c]thiophene-1-carboxylic acid [(2,2-difluoro-ethylcarbamoyl)-methyl]-amide which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
With
Chiralcel AD-H column;
In
ethanol; carbon dioxide;
Purification / work up;
Resolution of racemate;
- Guidance literature:
-
Multi-step reaction with 11 steps
1.1: toluene-4-sulfonic acid / toluene / 4 h / Reflux
2.1: triethylamine / toluene / Reflux
3.1: water; acetic acid / tetrahydrofuran / 48 h / 20 °C
4.1: tetrachloromethane; tributylphosphine / 60 °C
4.2: -10 - 0 °C
5.1: manganese(IV) oxide / dichloromethane / 2 h / Reflux
6.1: lithium hexamethyldisilazane / tetrahydrofuran / -78 - 20 °C / Inert atmosphere
6.2: 2 h / 20 °C / Inert atmosphere
7.1: thionyl chloride; pyridine / dichloromethane / 3 h / 20 °C
8.1: hydroxylamine hydrochloride; sodium hydroxide / water; tetrahydrofuran / 20 °C
9.1: water; lithium hydroxide monohydrate / tetrahydrofuran / 0.5 h / 50 °C
9.2: pH 1
10.1: N-ethyl-N,N-diisopropylamine; HATU / acetonitrile / 1 h / 20 °C
11.1: Chiralcel AD-H column / ethanol; carbon dioxide / Resolution of racemate
With
pyridine; tetrachloromethane; manganese(IV) oxide; thionyl chloride; lithium hydroxide monohydrate; tributylphosphine; hydroxylamine hydrochloride; water; toluene-4-sulfonic acid; acetic acid; triethylamine; N-ethyl-N,N-diisopropylamine; HATU; sodium hydroxide; lithium hexamethyldisilazane;
In
tetrahydrofuran; ethanol; dichloromethane; carbon dioxide; water; toluene; acetonitrile;
- Guidance literature:
-
Multi-step reaction with 10 steps
1.1: triethylamine / toluene / Reflux
2.1: water; acetic acid / tetrahydrofuran / 48 h / 20 °C
3.1: tetrachloromethane; tributylphosphine / 60 °C
3.2: -10 - 0 °C
4.1: manganese(IV) oxide / dichloromethane / 2 h / Reflux
5.1: lithium hexamethyldisilazane / tetrahydrofuran / -78 - 20 °C / Inert atmosphere
5.2: 2 h / 20 °C / Inert atmosphere
6.1: thionyl chloride; pyridine / dichloromethane / 3 h / 20 °C
7.1: hydroxylamine hydrochloride; sodium hydroxide / water; tetrahydrofuran / 20 °C
8.1: water; lithium hydroxide monohydrate / tetrahydrofuran / 0.5 h / 50 °C
8.2: pH 1
9.1: N-ethyl-N,N-diisopropylamine; HATU / acetonitrile / 1 h / 20 °C
10.1: Chiralcel AD-H column / ethanol; carbon dioxide / Resolution of racemate
With
pyridine; tetrachloromethane; manganese(IV) oxide; thionyl chloride; lithium hydroxide monohydrate; tributylphosphine; hydroxylamine hydrochloride; water; acetic acid; triethylamine; N-ethyl-N,N-diisopropylamine; HATU; sodium hydroxide; lithium hexamethyldisilazane;
In
tetrahydrofuran; ethanol; dichloromethane; carbon dioxide; water; toluene; acetonitrile;