Table 1 Conditions optimization for conversion of dioxacetal to O,P-acetal (2a)
From: Facile synthesis of α-alkoxymethyltriphenylphosphonium iodides: new application of PPh3/I2
Entry | Solvent | Time (h) | Temperature (°C) | Yield (%) |
|---|---|---|---|---|
1 | Toluene | 01 | 80 | 27 |
2 | Toluene | 03 | 80 | 33 |
3 | Toluene | 03 | Room temp | 55 |
4 a | Toluene | 05 | Room temp | 80 |
5 | Toluene | 06 | Room temp | 69 |
6 | – | 02 | Room temp | 35 |
7 | Acetonitrile | 04 | 40 | 17 |
8 | Acetonitrile | 02 | 80 | Traces |