Tronchet, Jean M. JInstitut de Chimie Pharmaceutique de l'Université de Genève 30, quai Ernest‐Ansermet, 1211 Genève 4 (SuisseOjha‐Poncet, JoëlleInstitut de Chimie Pharmaceutique de l'Université de Gen
The data are best rationalized on the basis of a hindered rotation about the N–CHO bond. The attribution of the signals to each conformation is obtained from the chemical shifts in the low field region and from the pattern of the aromatic protons.Hootele, C....
of the two geometrical isomers of methyl 1-bromocyclopropane 1,2-dicarboxylate has been investigated: - for the trans isomer, electrolysis carried out in the presence of NH 4 + ions give rise to a 90% retention ratio while 90% of inversion is attained when Bu 4 N + cations are present....