## Abstract The synthesis of racemic [α‐^11^C]amphetamine and [α‐^11^C]‐phenethylamine from on‐line produced [^11^C]nitroethane and [^11^C]nitromethane, respectively, is described. The condensations of nocarrier‐added [^11^C]nitroalkanes with benzaldehyde to form [β‐^11^C]β‐nitrostyrenes were inves
Synthesis of racemic [2-11C]phenylglycine
✍ Scribed by Christer Halldin; Bengt Långström
- Publisher
- John Wiley and Sons
- Year
- 1985
- Tongue
- French
- Weight
- 331 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The synthesis of racemic [2‐^11^C]phenylglycine, starting with ^11^CO~2′~ is reported. The [^11^C]benzaldehyde, prepared as previsously described in a two‐step reaction from the corresponding [^11^C]benzoic acid salt, was used in a modified Bücherer‐Strecker reaction. The radiochemical yield of [2‐^11^C]phenylglycine in benzaldehyde‐added experiments was 20 %, and in non‐added experiments 6 % (corrected for decay). The overall synthesis time, starting with ^11^CO~2~, was 50 min (including LC separation). The radiochemical purity was higher than 99 %.
📜 SIMILAR VOLUMES
2-l3C] Indole was synthesized in 39% yield by a three-step procedure starting with K13CN. The labeled indole was converted to D,L[2'-13d tryptophan in three subsequent steps and the overall yield from K13CN was 13.5%. Proton and 13C-NMR, and GC/mass spectral analyses confirmed the position and exten
DL-2-Phenylglycine-I-14C was prepared in good yield employing a modified Strecker synthesis. The resolution of DL-2-phenylglycine into its pure enantiomorphs was accomplished by the stereoselective enzymatic hydrolysis of the N-chloroacetyl derivative of the Loptical isomer using hog kidney acylase.
Penicillin G acylase (PGA) is exploited for producing pure D-phenylglycine from a racemate mixture, via an acylation reaction onto a cosubstrate, the ester methyl-4-hydroxyphenyl acetate. The reaction, when carried in a batch, is severely hampered by the reverse process, by which the product, 4-hydr
## Abstract Racemic, R‐ and S‐β‐hydroxybutyric acid were labelled with ^11^C in the carboxylic position by a two‐step stereospecific synthesis starting with carrier‐added [^11^C]cyanide and R/S, R‐ or S‐propylene oxide. Hydrolysis of the intermediate nitrile with hydrochloric acid gave racemic [1‐^