temperature overnight the solvent was evaporated in a stream of air, leaving a clear, colorless sirup (1.20 g.), [ ] 37.7°, c 2.600 in methanol. Reacetylation of this sirup with 10 ml. of acetic anhydride and 5 ml. of pyridine at room temperature overnight yielded 1.96 g. (96% yield) of the triacetate, m. p. 102-103°. Periodate Oxidation of 1,2-(l-Methylpentylidene)-o-
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