PET Synthesis Applications
Coherent Synthesis technology reduces reaction times for radio labelling reactions requiring high temperatures. Consequently, the efficiency of these reactions is drastically improved. The following table shows yields and reaction times using thermal heating, ordinary microwaves and Coherent Synthesis
Aromatic radiofluorinations
| Thermal Heating | Ordinary Microwave | Coherent Synthesis | ||||||
X |
R |
Y(%) | T(oC) | Time (min) | Y(%) | Time (min) | Y(%) | Time (min) |
| NO2 | 2-CHO | 78 | 120 | 10 | 65 | 2 | 76 | 0.25 |
| NO2 | 4-CHO | 70 | 85-110 | 20 | 65 | 2 | 75 | 0.5 |
| NO2 | 4-CN | 40-70 | 150 | 10 | 68 | 3 | 65 | 0.5 |
| NO2 | 2-CN | 65 | 150 | 15 | 74 | 0.5 | ||
| Br | 4-CHO | 3 | 85-110 | 20 | 7-13 | 0.5-1.5 | ||
X=Leaving Group, R=Activating Group, Ref: Stone-Elander, S.A. & Elander,
N.
Appl. Radiat. Isot. Vol 44, No.5, pp889-893 (1993)
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PET Chemistry