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Beilstein J. Org. Chem. 2014, 10, 2013–2020, doi:10.3762/bjoc.10.209
Graphical Abstract
Scheme 1: Planar and layered ethynyl aromatics as building blocks for extended aromatic structures.
Scheme 2: Previous coupling experiments with pseudo-ortho-diethynyl[2.2]paracyclophane 4.
Scheme 3: Glaser coupling of pseudo-gem-diethynyl[2.2]paracyclophane 2.
Scheme 4: Glaser coupling of pseudo-ortho-diethynyl[2.2]paracyclophane, 4.
Figure 1: Above: The molecule of compound 11 in the crystal; ellipsoids represent 30% probability levels. Onl...
Figure 2: Above: The molecule of compound 12 in the crystal; ellipsoids represent 50% probability levels. Onl...
Scheme 5: Sonogashira coupling of aldehyde 13 with ortho-diiodobenzene (14).
Scheme 6: Preparation of benzologs of dimers 11/12.
Figure 3: Above: The molecule of compound 19 in the crystal; ellipsoids represent 50% probability levels. Sol...
Figure 4: Above: One of the three independent molecules of compound 20 in the crystal; ellipsoids represent 3...
Scheme 7: Cross dimerization of 1 and 4.
Figure 5: The molecule of compound 22 in the crystal; ellipsoids represent 50% probability levels.
Scheme 8: An attempt to prepare a biphenylenophane.
Figure 6: The molecule of compound 26 in the crystal; ellipsoids represent 50% probability levels.