Stilbenoid dendrimers

Angewandte Chemie - International Edition

Volumn 37, Issue 5, 1998, Pages 643-645

  Meier, Herbert ^a   Lehmann, Matthias ^a  

^a JOHANNES GUTENBERG UNIVERSITY   (Germany)

Author keywords

Aggregations; Dendrimers; Liquid crystals stilbenes; Supramolecular chemistry

Indexed keywords

EID: 0031924372     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1521-3773(19980316)37:5<643::AID-ANIE643>3.0.CO;2-4     Document Type: Article

References (24)

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8. 2), 5.31 (s, 1H, CH), 7.16 (m, 1H, 2-H), 7.23 (d, 2H, 4-H, 6-H).
9. 3J = 16.2 Hz, 4H, olef. H), 7.80 (t. 1H, 4-H), 7.85 (d, 2H, 2-H, 6-H), 10.04 (s, 1H, CHO).
10. 3J = 16.1 Hz, 4H, olef. H), 7.55 (m, 6H, arom. H), 7.88 (t, 1H, 4-H), 7.94 (d, 2H, 2-H, 6-H), 10.09 (s. 1H, CHO).
11. Decomposition of the stilbenoid chromophores is almost complete; that is, the C-C double bonds disappear through formation of intermolecular C-C single bonds. For the 21 double bonds of 1c and the 9 double bonds of 1b these are processes that lead to very complex structures. In the case of 1a we were able to isolate two diastereomeric dimers with three four-membered rings each; see J. Juriew, T. Skorochodova, J. Merkushew, W. Winter, H. Meier. Angew. Chem. 1981, 93, 285; Angew. Chem. Int. Ed. Engl. 1981, 20, 269.
12. Decomposition of the stilbenoid chromophores is almost complete; that is, the C-C double bonds disappear through formation of intermolecular C-C single bonds. For the 21 double bonds of 1c and the 9 double bonds of 1b these are processes that lead to very complex structures. In the case of 1a we were able to isolate two diastereomeric dimers with three four-membered rings each; see J. Juriew, T. Skorochodova, J. Merkushew, W. Winter, H. Meier. Angew. Chem. 1981, 93, 285; Angew. Chem. Int. Ed. Engl. 1981, 20, 269.
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