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409341-03-3

TERT-BUTYL 4-HYDROXY-2-OXOPYRROLIDINE-1-CARBOXYLATE synthesis

2synthesis methods
-

Yield:409341-03-3 89%

Reaction Conditions:

Stage #1: DL-4-amino-3-hydroxybutyric acid;1,1,1,3,3,3-hexamethyl-disilazanewith pyridine in 5,5-dimethyl-1,3-cyclohexadiene at 118; for 14 h;Large scale;
Stage #2: di-tert-butyl dicarbonatewith dmap in Isopropyl acetate at 10 - 20; for 17.5 h;Large scale;
Stage #3: with triethylamine tris(hydrogen fluoride) in Isopropyl acetate; for 1 h;Large scale;

References:

Tian, Zhenping;Rasmussen, Michael;Wittenberger, Steven J. [Organic Process Research and Development,2002,vol. 6,# 4,p. 416 - 418]