2-Aryl-2-nitroacetates as Central Precursors to Aryl Nitromethanes, α-Ketoesters, and α-Amino Acids
摘要:
Nitroarylacetates are useful small molecular building blocks that act as precursors to alpha-ketoesters and aryl nitromethanes as well as alpha-amino acids. Methods were developed that produce each of these compound types in good yields. Two different conditions for decarboxylation are discussed for substrates with neutral and electron-poor aryl groups versus electron-rich aryl groups. For formation of the alpha-ketoesters, new mild conditions for the Nef disproportionation were identified.
作者:Bishwajit Paul、Glenn L. Butterfoss、Mikki G. Boswell、Mia L. Huang、Richard Bonneau、Christian Wolf、Kent Kirshenbaum
DOI:10.1021/ol203452f
日期:2012.2.3
We introduce peptoid oligomers incorporating N-(1)-naphthyl glycine monomers. Axial chirality was established due to restricted rotation about the C-N(aryl) bond. Atropisomerism of both linear and cyclic peptoids was investigated by computational analysis, dynamic HPLC, and X-ray crystallographic studies.
Efficient Palladium-Catalyzed Cross-Coupling of Highly Acidic Substrates, Nitroacetates
作者:Alison E. Metz、Simon Berritt、Spencer D. Dreher、Marisa C. Kozlowski
DOI:10.1021/ol203303b
日期:2012.2.3
Palladium-catalyzed cross-coupling conditions were developed that efficiently afford 2-aryl-2-nitroacetates from aryl bromides and the very acidic nitroacetates.