Isocyanide based multicomponent reactions of oxazolidines and related systems
作者:Robert W. Waller、Louis J. Diorazio、Brian A. Taylor、William B. Motherwell、Tom D. Sheppard
DOI:10.1016/j.tet.2010.05.083
日期:2010.8
aldehydes/ketones, isocyanides and carboxylic acids. The reaction of oxazolidines without a nitrogen substituent was found to give either the expected Ugi products or the N-acyloxyethylamino acid amides depending on the choice of reaction conditions. Optimised reaction conditions were also developed for the ring-expansion of oxazolidines to morpholin-2-ones via reaction with an isocyanide followed by hydrolysis
Robbe; Fernandez; Dubief, European Journal of Medicinal Chemistry, 1982, vol. 17, # 3, p. 235 - 243
作者:Robbe、Fernandez、Dubief、et al.
DOI:——
日期:——
SABA, SHAHROKH;DOMKOWSKI, PATRICK W.;FIROOZNIA, FARIBORZ, SYNTHESIS (BRD),(1990) N0, C. 921-923
作者:SABA, SHAHROKH、DOMKOWSKI, PATRICK W.、FIROOZNIA, FARIBORZ
DOI:——
日期:——
Observations on the Reaction of <i>N</i>-Alkyloxazolidines, Isocyanides and Carboxylic Acids: A Novel Three-Component Reaction Leading to <i>N</i>-Acyloxyethylamino Acid Amides
N-Alkyloxazolidines, readily prepared by condensation of the parent carbonyl compounds with β-aminoalcohols, were found to undergo three-component reactions with isocyanides and carboxylic acids to give N-acyloxyethylamino acid derivatives in good yield. The reaction allows the variation of substituents at five different sites in the products through suitable choice of reagents.
Thermal Rearrangement of some Oxazolidine<i>N</i>-Oxides. 2-Alkyl-6-aryl-3,4-dihydro-2<i>H</i>-1,5,2-dioxazines
作者:Shahrokh Saba、Patrick W. Domkowski、Fariborz Firooznia
DOI:10.1055/s-1990-27054
日期:——
3-Alkyl-2-aryloxazolidines are oxidized with 3-chloroperoxybenzoic acid to produce the corresponding oxazolidine N-oxides. These N-oxides undergo thermal rearrangement to give 2-alkyl-6- aryl-3,4-dihydro-2H-1,5,2-dioxazines in 55-85% yield.