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Chair and Boat: Stable Conformers of an Eight‐Membered Ring System
Author(s) -
Saalfrank Rolf W.
Publication year - 1977
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.197701851
Subject(s) - conformational isomerism , ring (chemistry) , derivative (finance) , crystallography , chemistry , crystallization , stereochemistry , nuclear magnetic resonance , molecule , physics , organic chemistry , financial economics , economics
Two stable conformers , which can be resolved by fractional crystallization, are formed by the dioxacyclooctadiene derivative (1) . This is the first such case with an eight‐membered ring system. Conformers (1a) and (1b) were identified by their 1 H‐ and 13 C‐NMR spectra.