Pd-catalyzed arylation/aza-Michael addition cascade to C2-spiroindolines and azabicyclo[3.2.2]nonanones
作者:Xiao-Wen Zhang、Hui Zhang、Hu-Chong Wang、Ming-Hui Zhu、Hengjiang Cong、Wen-Bo Liu
DOI:10.1039/d0cc04935b
日期:——
Pd(PPh3)4 as a catalyst, C2-spiroindolines are accessed via an intermolecular vinylogous arylation of β-alkyl cyclic enones and 2-haloanilines followed by an intramolecular aza-Michael addition. The functional group tolerance of this transformation is examined by 18 examples in up to 93% yield. In the second part, we developed an α′-arylation/aza-Michael addition cascade strategy to construct azabicyclo[3
Stereoselectivity in the intermolecular trapping of the bicyclic radical intermediates from cyclization of 3-(1-ethoxy-2-haloethoxy)cyclohexenes with methyl acrylate was found to be affected remarkably by the conformation of the radical intermediates. The optimized conformers of 8-methoxy-7-oxabicyclo[4.3.0]non-2-yl radicals, models for the radical intermediates, were obtained by PM3 RHF molecular orbital calculations, and the stereoselectivity was analyzed in detail.
328. 6-Acetylcyclohex-2-enones: the condensation of β-diketones with αβ-unsaturated ketones
作者:R. N. Lacey
DOI:10.1039/jr9600001625
日期:——
Mn(III) acetate-mediated regioselective benzylation of various α,β-unsaturated and β-alkoxy-α,β-unsaturated ketones
作者:Cihangir Tanyeli、Devrim Özdemirhan
DOI:10.1016/j.tetlet.2003.08.001
日期:2003.9
We describe herein the results of manganese(III) acetate mediated alpha'-benzylation of various a,p-unsaturated and beta-alkoxy-alpha,beta-unsaturated ketones in moderate yields. (C) 2003 Elsevier Ltd. All rights reserved.
Lawesson,S.-O. et al., Recueil des Travaux Chimiques des Pays-Bas, 1964, vol. 83, p. 464 - 468