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Beilstein J. Org. Chem. 2021, 17, 283–292, doi:10.3762/bjoc.17.27
Graphical Abstract
Scheme 1: Scope of the nitrostyrenes 1 in the Diels–Alder reaction with CPD (dr = exo:endo).
Figure 1: The structure assignment of norbornenes 2 by 1H (a) and NOE (b) NMR spectroscopy.
Figure 2: 13C NMR spectrum of the mixture of exo- and endo-isomers of norbornene 2l.
Figure 3: The predicted reaction pathway for the Diels–Alder reaction of nitrostyrene 1h with CPD is displaye...
Scheme 2: The Diels–Alder reaction of nitrostyrene 1h with spiro[2.4]hepta-4,6-diene.
Scheme 3: Diels–Alder reaction of nitrostyrenes 1 with CHD (dr = exo:endo). (а) Reaction under microwave acti...
Scheme 4: Kinetic study of reactions of 1h with CPD and CHD.
Figure 4: Kinetic curves for the reactions of nitrostyrene 1h with CPD (50–130 °C) and CHD at 110 °C.
Scheme 5: The Diels–Alder reaction of the nitrostyrene 1h with 1-methoxy-1,3-cyclohexadiene.
Scheme 6: Selected chemical transformations of norbornenes 2 (dr = exo:endo).