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Beilstein J. Org. Chem. 2013, 9, 838–845, doi:10.3762/bjoc.9.96
Graphical Abstract
Scheme 1: Reactivity of nitroalkenes and/or their respective nitronates in cycloaddition reactions.
Scheme 2: Synthetic route toward the chiral (S,E)-γ-aminated nitroalkenes 5a–c and their 1,3-diamine derivati...
Figure 1: ORTEP for nitroso acetal 11b.
Figure 2: 1D NOESY correlation between H2, H3a, H4 and H6 for all nitroso acetals.
Scheme 3: Transition-state models to stereoselective approaches in the multicomponent cycloadditions of 5a–c.
Scheme 4: Hydrogenolysis of 9c to pyrrolizidin-3-one 14c.
Beilstein J. Org. Chem. 2013, 9, 832–837, doi:10.3762/bjoc.9.95
Scheme 1: Reagents and conditions: (i) K2CO3, EtOH/H2O 5:1, BnBr, 100 °C, 12 h (90–99%). (ii) (a) LiAlH4, THF...
Figure 1: Chiral HPLC analysis: Chiralpak AD-H; n-hexane/2-propanol 99:1 (0.6 mL/min), T = 25 °C; UV–vis dete...
Scheme 2: Synthesis of 1,3-diamines 14a,b. (i) NaBH4/NiCl2·6H2O/MeOH/3 h/rt.