Lewis acid-catalyzed hetero Diels-Alder cycloadditions of 3-alkyl, 3-phenyl and 3-carboxylated 2H-azirines
Activation by Lewis acids of 3-alkyl and 3-phenyl 2H-azirines promotes their participation in hetero Diels-Alder reactions with a variety of dienes. This methodology circumvents the previous requirement of an electron-withdrawing carboxyl moiety at the 3-position of the 2H-azirine.
Unnatural amino acids. 2. Simple method of obtaining esters of aziridine-2-carboxylic acids by a transesterification reaction
A series of N-unsubstituted esters of aziridine-2-carboxylic acid has been obtained by transesterification in basic medium using primary, secondary, and tertiary alcohols. Methods of transesterification using various bases (K 2CO3, R
Shtrumfs,Chernyak,Kums,Kalvins,Trapencieris
p. 725 - 733
(2007/10/03)
Reductive deprotection of N-tritylaziridines
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Vedejs,Klapars,Warner,Weiss
p. 7542 - 7546
(2007/10/03)
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