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879324-03-5

Carbamic acid, (4,5-dihydro-4-oxo-2-thiazolyl)-, 1,1-dimethylethyl ester (9CI) synthesis

2synthesis methods
-

Yield: 86%

Reaction Conditions:

in tetrahydrofuran at 60; for 48 h;

Steps:

H.1
Pseudothiohydantoin (5.82 g, 50 mmol) and di-t-butyl dicarbonate (21.82 g, 100 mmol) were combined in dry THF (100 mL) and stirred at 60° C. for 48 h. The cooled mixture was treated with decolorizing carbon and filtered through diatomaceous earth rinsing with THF. The filtrate was concentrated to a damp solid which was triturated with hexane. The resulting solid was collected and rinsed with hexane yielding 9.35 g (86%) of the title compound as a light tan solid.

References:

Reiter, Lawrence A.;Linde, Robert G. US2008/76771, 2008, A1 Location in patent:Page/Page column 17