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Wittig‐Synthese und Röntgen‐Struktur eines 26‐gliedrigen, zwei Bipyridin‐Einheiten enthaltenden Makrocyclus
Author(s) -
Vogtle Fritz,
Hochberg Robert,
Kochendörfer Frank,
Windscheif PaulMichael,
Volkmann Martin,
Jansenb Martin
Publication year - 1990
Publication title -
chemische berichte
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 0009-2940
DOI - 10.1002/cber.19901231115
Subject(s) - chemistry , wittig reaction , phosphonium , stereochemistry , bromide , polymer chemistry , organic chemistry
Wittig Synthesis and X‐Ray Structure of a 26‐Membered Macrocycle Containing two Bipyridine Units Wittig‐type macrocyclization of bipyridinedicarbaldehyde 5 with bis(phosphonium bromide) 6 leads to the new bipyridinophanes 7 8 . The X‐ray structural analysis of 8 reveals a step‐type conformation, which according to 1 H‐NMR results is also present in solution.