Tomaszewski, Miroslaw J.; Warkentin, John; Werstiuk, Nick H., Australian Journal of Chemistry, 1995, vol. 48, # 2, p. 291 - 322
作者:Tomaszewski, Miroslaw J.、Warkentin, John、Werstiuk, Nick H.
DOI:——
日期:——
Rate constants for aryl radical cyclization to aldimines: synthesis of tetrahydroisoquinolines by fast 6-endo closures to carbon
作者:Mirosḱlaw J. Tomaszewski、John Warkentin
DOI:10.1016/0040-4039(92)88156-y
日期:1992.4
Aryl radicals cyclize to an imino functional group in a competition involving 6-endo closure to C and 5-exo closure to N. There is a large 6-endo preference forming tetrahydroisoquinolinyl radicals with k6-endo (80-degrees-C) > 10(8)s-1.
Free Radical-Mediated Aryl Amination and Its Use in a Convergent [3 + 2] Strategy for Enantioselective Indoline α-Amino Acid Synthesis
作者:Rajesh Viswanathan、Erode N. Prabhakaran、Michael A. Plotkin、Jeffrey N. Johnston
DOI:10.1021/ja0284308
日期:2003.1.1
reduction by stannane, offering an advantage over the use of diazo and azide functional groups as nitrogen sources for carbon radicals. The free radical-mediated aryl amination was sequenced with the O'Donnell phase transfer-catalyzed enantioselective alkylation strategy of glycinyl imine to provide either enantiomer of indoline alpha-amino acids with high ee. These new constrained phenyl alanine derivatives