Technology Process of 2,5-Cyclohexadiene-1-carboxylic acid,
1-[2-[(1R)-1-methyl-2-oxocyclopentyl]ethyl]-, methyl ester
There total 11 articles about 2,5-Cyclohexadiene-1-carboxylic acid,
1-[2-[(1R)-1-methyl-2-oxocyclopentyl]ethyl]-, methyl ester which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
methyl (2R)-1-[2-(2-hydroxy-1-methylcyclopentyl)-ethyl]cyclohexa-2,5-diene-1-carboxylate;
With
oxalyl dichloride; dimethyl sulfoxide;
In
dichloromethane;
at -78 ℃;
With
triethylamine;
DOI:10.1016/S0040-4039(02)00570-1
- Guidance literature:
-
Multi-step reaction with 3 steps
1.1: diisopropylamine; n-BuLi / tetrahydrofuran; hexane / 0.25 h / -78 °C
1.2: 83 percent / DMPU / tetrahydrofuran / -78 - 50 °C
2.1: 78 percent / n-tetrabutylammonium fluoride / tetrahydrofuran / 5 h / 20 °C
3.1: oxalyl chloride; DMSO / CH2Cl2 / 1 h / -78 °C
3.2: 95 percent / Et3N / CH2Cl2 / 8 h / 20 °C
With
n-butyllithium; oxalyl dichloride; tetrabutyl ammonium fluoride; dimethyl sulfoxide; diisopropylamine;
In
tetrahydrofuran; hexane; dichloromethane;
3.1: Swern oxidation;
DOI:10.1002/ejoc.200600429
- Guidance literature:
-
Multi-step reaction with 7 steps
1.1: 97 percent / potassium hydroxide / methanol / 16 h / 20 °C
2.1: 84 percent / iodine; Pb(OAc)4 / CCl4 / 1 h / 80 °C / Irradiation
3.1: 65 percent / NaBH4 / ethanol / 3 h / 20 °C
4.1: 96 percent / imidazole / CH2Cl2 / 16 h / 20 °C
5.1: diisopropylamine; n-BuLi / tetrahydrofuran; hexane / 0.25 h / -78 °C
5.2: 83 percent / DMPU / tetrahydrofuran / -78 - 50 °C
6.1: 78 percent / n-tetrabutylammonium fluoride / tetrahydrofuran / 5 h / 20 °C
7.1: oxalyl chloride; DMSO / CH2Cl2 / 1 h / -78 °C
7.2: 95 percent / Et3N / CH2Cl2 / 8 h / 20 °C
With
1H-imidazole; lead(IV) acetate; potassium hydroxide; sodium tetrahydroborate; n-butyllithium; oxalyl dichloride; tetrabutyl ammonium fluoride; iodine; dimethyl sulfoxide; diisopropylamine;
In
tetrahydrofuran; methanol; tetrachloromethane; ethanol; hexane; dichloromethane;
2.1: Barton-Koch reaction / 7.1: Swern oxidation;
DOI:10.1002/ejoc.200600429