## Abstract ^11^C‐Labelled benzene derivatives were prepared catalytically by trimerizing acetylene‐^11^C with acetylene and propyne carriers over 1.5 grams of silica‐alumina support activated by potassium chromate (0.2% by weight). Optimized yields of the ^11^C‐labelled aromatics were obtained whe
11C-Labelled polymer-bound wittig reagents in the synthesis of 11C-labelled aromatic alkenes
✍ Scribed by M. ögren; K. Hornfeldt; K.J. Fasth; B. Långström
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 491 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0969-8043
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Stable and 'lC-arylnitriles have been synthesized in 10 minutes by treatment of substituted fluoroaryl (R = H, p-Me, o-Me, p-C1) chromium tricarbonyl complexes with stable and "C-cyanide in DMSO at 115"-135'. Under the conditions used, decomplexation of the new complex occurs during the substitution
## Abstract The synthesis of [1‐^11^C]pentane, [1‐^11^C]nonane, [1‐^11^C]‐ undecane, 2‐[^11^ C]methyl‐naphthalene and [^11^C]methyl‐benzene (toluene) are reported. The hydrocarbons were prepared by the coupling reaction between [^11^C]methyl iodide and the appropriate lithium organocuprate. Toluene