The Thermal Decomposition of<i>N</i>,<i>O</i>-Diacyl-<i>N</i>-<i>t</i>-butylhydroxylamines. IV. A Novel Acyloxyl Migration in<i>N</i>,<i>O</i>-Diacyl-<i>N</i>-<i>t</i>-butylhydroxylamines
作者:Yuzuru Uchida、Seizi Kozuka
DOI:10.1246/bcsj.55.2681
日期:1982.8
O-diacyl-N-t-butylhydroxylamines were prepared, and their thermaldecompositions were studied. N-Propionyl-O-benzoyl-N-t-butylhydroxylamine gave N-t-butyl-2-benzoyloxypropanamide, together with the decomposition products, N-t-butylpropanamide and benzoic acid, upon thermaldecomposition in tetralin. Similar benzyloxyl migrations were found in the thermaldecomposition of N-butyryl, N-valeryl, and N-(3-phenylpropionyl)
Formation of aziridinones (α-lactams) from hydroxamic derivatives
作者:Christine M. Bladon、Gordon W. Kirby
DOI:10.1039/c39820001402
日期:——
Various NO-disubstituted derivatives of chloroaceto- and phenylaceto-hydroxamic acid are shown to cyclise with base to give aziridinones with cleavage of the N–O bond, a process exemplified by an efficient synthesis of 1-t-buty-3-phenylaziridin-2-one.
Base-promoted reaction of O-sulfonylated hydroxamic acids with nucleophiles. A new method for the synthesis of .alpha.-substituted amides
作者:Robert V. Hoffman、Naresh K. Nayyar、Wenting Chen
DOI:10.1021/jo00047a024
日期:1992.10
Treatment of a series of hydroxamic acids 2 with mesyl chloride in the presence of 2 equiv of triethylamine at 0-degrees-C gives 2-chloroamides 3 in good yields. Use of a single equivalent of triethylamine gives the (N-mesyl-oxy)amides 1, which are versatile synthetic intermediates as they can be readily converted to 2-bromoamides 4 with lithium bromide and triethylamine and to 2-hydroxyamides 5 with triethylamine in aqueous acetonitrile.
Khlebnikov; Nikiforova; Kostikov, Russian Journal of Organic Chemistry, 1996, vol. 32, # 5, p. 715 - 728
作者:Khlebnikov、Nikiforova、Kostikov
DOI:——
日期:——
Moderhack, Dietrich; Lorke, Michael; Schomburg, Dietmar, Liebigs Annalen der Chemie, 1984, # 10, p. 1685 - 1695