Synthetic Methods and Reactions. Part 106. Suppression of anchimerically assisted rearrangement products in the synthesis of α??fluorocarboxylic acids from α??amino …
GA Olah, GK Surya Prakash, YL Chao
Index: Olah, George A.; Prakash, G. K. Surya; Chao, Yah Li Helvetica Chimica Acta, 1981 , vol. 64, # 8 p. 2528 - 2530
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Citation Number: 29
Abstract
Abstract Anchimerically assisted rearrangement, observed in the fluorination of some α- amino acids with 70: 30 (w/w) hydrogen fluoride/pyridine (by weight) in the presence of NaNO 2, is substantially or fully suppressed by using the less acidic reagent 48: 52 (w/w) hydrogen fluoride/pyridine.
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