Selective palladium-catalyzed amination of β-chloroacroleins by substituted anilines
作者:Stéphanie Hesse、Gilbert Kirsch
DOI:10.1016/j.tet.2005.05.011
日期:2005.7
beta-Chloroacroleins can undergo a selective amination on their chloro position under palladium catalysis; in those conditions, no imine formation was observed. Their coupling with anilines carrying electron-donating or electron-withdrawing substituents proceeds in moderate to good yields and steric hindrance does not seem to be a limitation as o-substituted anilines react readily. (c) 2005 Elsevier Ltd. All rights reserved.
Ricci,A. et al., Gazzetta Chimica Italiana, 1977, vol. 107, p. 19 - 26
作者:Ricci,A. et al.
DOI:——
日期:——
SEKHAR, B. CHANDRA;RAMANA, D. V.;RAMADAS, S. R., SULFUR LETT., 9,(1989) N, C. 271-277
作者:SEKHAR, B. CHANDRA、RAMANA, D. V.、RAMADAS, S. R.
DOI:——
日期:——
Studies on the reactivity of new types of tetracyclic-1,5-benzoxazepines: Part V
The syntheses of tetracyclic 1,5-benzoxazepines 3a-e from heterocyclic (3-chloroaldehydes 1a-e and 2-aminophenol are reported herein (Scheme I). Attempted lithium aluminium hydride (LiAlH4) reduction of the imine double bond in 3a-e failed to furnish the corresponding saturated compounds 5a-e. Attempted catalytic hydrogenation of 3a-e in the presence of acetic acid and acetic anhydride gave surprisingly