Microwave-assisted conversion of 4-nitrophenyl esters into 0-protected hydroxamic acids
The microwave-assisted synthesis of O-protected hydroxamic acids starting from 4-nitrophenyl esters and O-protected hydroxylamines is described. Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009.
Kurz, Thomas,Pein, Miriam K.,Marek, Linda,Behrendt, Christoph T.,Spanier, Lukas,Kuna, Krystina,Bruecher, Karin
supporting information; experimental part
p. 2939 - 2942
(2009/10/11)
A convenient method for the conversion of N-acyloxazolidinones to hydroxamic acids
(matrix presented) Treatment of N-acyloxazolidinones with hydroxylamines using samarium triflate as a Lewis acid provides the corresponding hydroxamic acids in 50-98% yields at room temperature. The conversion proceeds with high degree of chemoselectivity and without racemization of chiral centers α- to the acyl group.
Sibi, Mukund P.,Hasegawa, Hikaru,Ghorpade, Sandeep R.
p. 3343 - 3346
(2007/10/03)
CYCLIC ARYL HYDROXAMIC ACIDS, DERIVATIVES THEREOF AND METHOD OF USE AS ANTI-ALLERGY AGENTS
Cyclic aryl hydroxamic acids and derivatives thereof are provided having the structure STR1 wherein R is H or arylalkyl, and including acid-addition salts thereof. These compounds are useful as inhibitors of leukotriene production and as such are useful a
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(2008/06/13)
Boron Chelates of N-Substituted Hydroxamic Acids
Boron chelates 2 - 6 are synthesized from N-alkyl- or N-arylhydroxamic acids 1 and various boron compounds that are capable of being chelated by bidentate ligands.The spectroscopic data correspond to the cyclic B,N-betaine structure of 2 - 6 and reflect the Lewis acidity of the chelated borenium ions as well as the extent of electron delocalization in the hydroxamate ligands.
Kliegel, Wolfgang,Nanninga, Dierk
p. 2616 - 2629
(2007/10/02)
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