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Beilstein J. Org. Chem. 2015, 11, 1707–1712, doi:10.3762/bjoc.11.185
Graphical Abstract
Figure 1: Selected examples of biologically active 2-aminothiophene derivatives.
Scheme 1: Some strategies for the synthesis of 2-aryl/alkylaminothiophenes and 3-nitrothiophenes.
Scheme 2: Our plan for the synthesis of N-substituted 3-nitrothiophen-2-amines.
Scheme 3: Synthesis of N-substituted 3-nitrothiophen-2-amines.
Figure 2: X-ray diffraction study of compound 3p.
Scheme 4: Proposed reaction sequence leading to the formation of 3.
Beilstein J. Org. Chem. 2014, 10, 459–465, doi:10.3762/bjoc.10.43
Scheme 1: Summary of the transformations involved in the synthesis of compounds 5, containing chromone and β-...
Scheme 2: Synthesis of compounds 5.
Figure 1: X-ray structure of compound 5h.
Scheme 3: Initial mechanistic proposal to explain the formation of compounds 5 that was ruled out by deuterat...
Scheme 4: Alternative mechanistic proposal based on a carbon monoxide-induced deoxygenation.