Stereoselective Synthesis of Unnatural β-Amino Acids from Nitroethane via 5, 6-Dihydro-4H-1, 2-oxazin-3-ylacetatesстатья
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Дата последнего поиска статьи во внешних источниках: 19 сентября 2017 г.
Аннотация:The reduction of easily available methyl 5, 6-dihydro-4H-1, 2-oxazin-3-ylacetates
provides an efficient route to different diastereomerically pure unnatural β-amino acids. A
two-step protocol including reduction of the C= N bond of the initial oxazine with sodium
cyanoborohydride during the first step and hydrogenation of the NO bond during the second
step produced the target β-amino acid esters with higher stereoselectivity than obtained with
conventional catalytic hydrogenation.