Technology Process of (2R,3R)-2-Amino-5-tert-butoxycarbonylamino-3-hydroxy-pentanoic acid ethyl ester
There total 1 articles about (2R,3R)-2-Amino-5-tert-butoxycarbonylamino-3-hydroxy-pentanoic acid ethyl ester which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
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Multi-step reaction with 6 steps
1: (COCl)2; DMSO; Et3N / CH2Cl2 / 2 h / -78 - -60 °C
2: tetrahydrofuran / 24 h / 20 °C
3: 95 percent / K3FeCN6; CH3SO2NH2; K2CO3 / OsO4; (DHQD)2PHAL / 2-methyl-propan-2-ol; H2O / 24 h / 0 °C
4: 97 percent / SOCl2; Et3N / 0.5 h
5: 93 percent / NaN3 / dimethylformamide / 20 h / 60 °C
6: 98 percent / H2 / 10 percent Pd-C / ethyl acetate / 20 °C
With
thionyl chloride; sodium azide; oxalyl dichloride; methanesulfonamide; hydrogen; potassium carbonate; dimethyl sulfoxide; triethylamine; potassium hexacyanoferrate(III);
palladium on activated charcoal; osmium(VIII) oxide; 1,4-bis(9-O-dihydroquinidine)phthalazine;
In
tetrahydrofuran; dichloromethane; water; ethyl acetate; N,N-dimethyl-formamide; tert-butyl alcohol;
1: Swern oxidation / 2: Wittig reaction / 3: Sharpless asymmetric dihydroxylation;
DOI:10.1016/j.tetlet.2006.04.055