Unformatted text preview: and dry. The glucosazone is thus obtained as bright yellow crystals, m.p. 204° with decomposition. Maltosazone (Phenyl-maltosazone). C 12 H 20 9 (N.NHC 6 H 5 ) 2 . Required: Maltose, 2 g.; acetic acid, 2 ml.; phenylhydrazine, 2 ml. Proceed as in the preparation of glucosazone, using for the first solution 2 g. of maltose in 10 ml. of water, and for the second solution 2 ml. of phenylhydrazine dissolved in a mixture of 2 ml. of glacial acetic acid and 5 ml. of water. Heat in a boiling water-bath for 30 minutes. Maltosazone is much more soluble than glucosazone in hot water, and therefore does not separate whilst the boiling-tube is still in the boiling water-bath. When the heating is complete, either turn out the gas and allow the tube to cool slowly while still in the bath, or alternatively place...
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This note was uploaded on 09/19/2011 for the course CHM 2211 taught by Professor Castalleano during the Fall '06 term at University of Florida.
- Fall '06
- Organic chemistry