Beneficial Effect of ortho-Methoxy Groups in the Asymmetric Ring Opening of meso Epoxides with Silicon Tetrachloride Catalyzed by Chiral ortho-Methoxyphenyldiazaphosphonamide Lewis Bases Response to the Communication by G. Buono et al. We are grateful to the National Science Foundation (CHE-9803124) for generous financial support. Cory M. Stiff is thanked for preliminary experiments.