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Cyclophanes with large internal substituents. The synthesis and conformational behavior of 2,11-dithia [3,3]metacyclophanes and a [2,2] metacylophane with tert-butyl substituents.

✍ Scribed by Reginald H. Mitchell; Kumudini S. Weerawarna; Gordon W. Bushnell

Publisher: Elsevier Science
Year: 1984
Tongue: French
Weight: 251 KB
Volume: 25
Category: Article
ISSN: 0040-4039
DOI: 10.1016/s0040-4039(01)80059-9

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✦ Synopsis

The preparation, 1 Hmr spectra and stereochemistry of 1E ,3E,2F, 3F and 2G are described. The stereochemistry of 3E is supported by an X-ray structure determination. The synthesis and stereochemical aspects of cyclophanes have been of particular interest over the last two decades. 2,3 However, recently the size of the internal substituents, X,Y, in the [2,2]metacyclophane 1 and the 2,11-dithia[3,3]metacylophanes 2 and 3 has attracted

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