Abstract: The ratios (C/O) of C-and 0-methylation of lithioisobutyrophenone in dioxolane and in dimethoxyethane have been determined over a wide temperature range and in the presence and absence of LiCl. Comparison of these results with those of earlier NMR studies has established that ion-pair aggregates are the true reactants. The effects of crown ethers,[2.1. l] cryptand, and hexamethylphosphoric triamide on both C/O and chemical ...
