Tetrahedron letters

Ring expansion of N-acyl aziridine-2-imides to oxazoline-4-imides, useful precursors of pure β-Hydroxy α-aminoacids

G Cardillo, L Gentilucci, A Tolomelli, C Tomasini

Index: Cardillo, Giuliana; Gentilucci, Luca; Tolomelli, Alessandra; Tomasini, Claudia Tetrahedron Letters, 1997 , vol. 38, # 39 p. 6953 - 6956

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Citation Number: 38

Abstract

Analytical data for 2e: 1 H-NMR (CDCl 3 ) δ 0.73 (d, J = 6.6 Hz, 3H, CH 3 ), 1.09 (t, J = 7.4 Hz, 3H, CH 3 ), 1.58–1.86 (m, 2H, CH 2 ), 2.84 (s, 3H, NCH 3 ), 2.99 (dt, J = 2.7, 5.7 Hz, 1H, CHCH 2 ), 3.90 (dq, J = 6.6, 8.7 Hz, 1H, CHMe), 4.89 (d, J = 2.7 Hz, 1H, COCH), 5.15 (d, J = 8.7 Hz, 1H, CHPh), 7.00–8.10 (m, 10H, Ph). ... Analytical data for 3e: IR v 1720, 1660, 1420 cm −1 ; 1 H-NMR (CDCl 3 ) δ 0.83 (d, J = 6.6 Hz, 3H, CH 3 ), 1.03 (t, J = 7.3 Hz, 3H, CH 3 ), ...