142917-83-7Relevant articles and documents
Synthetic applications of the cyclic iminocarbonate rearrangement Enantioselective syntheses of chloramphenicol and 4-epi-cytoxazone
Park, Jung Nam,Ko, Soo Y.,Koh, Hun Y.
, p. 5553 - 5556 (2007/10/03)
Chloramphenicol and 4-epi-cytoxazone have been enantioselectively synthesized using the asymmetric dihydroxylation and the cyclic iminocarbonate rearrangement as key steps. (C) 2000 Elsevier Science Ltd.
Highly selective chirally templated isomunchnone cycloadditions of achiral aldehydes: Synthesis of an enantiopure α,β-Dihydroxyacid
Drew, Michael G. B.,Fengler-Veith, Marion,Harwood, Laurence M.,Jahans, Archie W.
, p. 4521 - 4524 (2007/10/03)
Additions of p-nitro- and p-methoxybenzaldehyde to isomunchnone derivatives of (5S)-phenyloxazin-3-one and -2,3-dione led to corresponding adducts (3,4,6) with excellent diastereofacial and exo-selectivity. Hydrolysis and subsequent cleavage of adduct 3 permitted recovery of the original template and furnished dihydroxyacid 9 that was transformed into the known ethyl ester 10. Comparison of its optical rotation with the literature value confirmed its high optical purity.