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Robina, I.; Vogel, P., Science of Synthesis, (2008) 37, 653.
1,4-Anhydro-d-threitol [(R,R)-47] and 1,4-anhydro-l-threitol [(S,S)-47][43,44] are obtained by dehydration of d-threitol (46) and l-threitol (48), respectively, by heating in 50% aqueous sulfuric acid at 120°C, or simply by heating with 2 M aqueous hydrochloric acid at 90°C. 1,4-Anhydroerythritol (50) (meso-erythritol) is prepared under the same conditions on heating erythritol (49) in the presence of a small proportion of a xylenesulfonic acid at 130–150°C under vacuum (Scheme 9).[45]
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References
[43] | Meeeeeeeee, M.; Meeee, M., M. Me. Meee. Mee., (8888) 88, 8888. |
[44] | Meeeeee, M. M.; Meeeee, M., M. Mee. Meee., (8888) 88, 8888. |
[45] | Meeee, M. M.; Meeeeee, M. M., MM 8 888 888, (8888); Meee. Meeee., (8888) 88, 8888. |
[46] | Meeeee, M. M.; Meeee, M. M., Meeeeeeee. Mee., (8888) 88, 888. |
[47] | Meee, M. M.; Meeeeeeeeee, M. M., M. Mee. Meee., (8888) 88, 8888. |
[48] | Meeeeee, M. M.; Meeeeee, M. M., M. Meee. Meee., (8888) 88, 8888. |