ISSN:
0009-2940
Keywords:
Diphenylbutadiynophane
;
Eglinton reaction
;
Macrocycles
;
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Flat and Rigid Macrocycles Based on 1,4-Diphenylbutadiyne Units[1.1](3,3′)-1,4-Diphenylbutadiynophanes of type Ia,b (e.g. 1 - 4) are obtained by coupling the diethynyl derivatives 18 - 21 by means of CuCl/CuCl2. The properties of 1 - 4 (UV, NMR, charge transfer) are compared to 1,4-diphenylbutadiyne. In contrast to 1,4-diphenylbutadiyne, 1 and 2 (type Ia) are highmelting, colorless solids, which are sparingly soluble in common organic solvents. The better soluble compounds 3 and 4 (type Ib) are also prepared. The macrocycles 1 - 4 consist of two “isolated” 1,4-diphenylbutadiyne units. In contrast to 1,4-diphenylbutadiyne they do not seem to form charge-transfer complexes with tetracyanoethene (TCNE) in CH2Cl2.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19911240435
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