| 摘要 |
1293829 2 - Benzylidene - 4 - hydroxy - 4- hydroxymethyl - tetrahydrofuran and benzylfuranmethanol therefrom FMC CORP 30 Oct 1970 [31 Oct 1969] 51747/70 Heading C2C The invention comprises 2-benzylidene-4- hydroxy - 4 - hydroxymethyltetrahydrofuran, its conversion into 5-benzyl-3-hydroxymethylfuran by heating preferably in the presence of a strong base to a sufficiently high temperature to eliminate water and its preparation by cyclizing 5 - phenyl - 2 - hydroxymethylpent-4- yne - 1,2 - diol or 5 - phenyl - 2 - hydroxymethyl- 3-yne-1,2-diol. |
