Beilstein J. Org. Chem.2010,6, No. 14, doi:10.3762/bjoc.6.14
structures [1][2][3][4] are attractive to chemists not only because they are aesthetically appealing but also due to their potential applications in molecular machines and smartmaterials [5][6][7][8][9]. Although a few covalent templates are known [10][11][12], their synthesis most often makes use of non
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Graphical Abstract
Scheme 1:
Two synthetic procedures for the preparation of benzo-21-crown-7 (C7) and its formyl analogue 4: To...