## Abstract In support of a program to develop a treatment for depression, three isotopically labeled forms of the 5‐HT~1B~ antagonist AZ12320927 were synthesized. A tritium labeled version was synthesized for autoradiography using Ir‐catalyzed hydrogen–tritium exchange. A C‐14 labeled version was
Economical syntheses of 3H-2H and 14C-labeled ethyl acetates
✍ Scribed by Francisco J. Alvarez; Ildiko M. Kovach; Richard L. Schowen
- Publisher
- John Wiley and Sons
- Year
- 1982
- Tongue
- French
- Weight
- 165 KB
- Volume
- 19
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
Tritium and ^14^C‐labeled isomers of ethyl acetate are excellent substrates for competitive dual‐labeled radioactive isotopic measurements of β‐deuterium and β‐tritium isotope effects. Methods are given for preparation of the ethyl esters of acetic acid‐2‐^3^H, acetic acid‐2‐^14^C, and acetic acid‐2,2‐2H~2~‐2‐^3^H, and of the acetic acid ester of ethanol‐l‐^14^C from the least costly labeled precursors in high purity (yield 70‐80%) on the mmole scale.
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## Abstract ^2^H and ^3^H labelled Sch 40120 were prepared by Pt catalysed exchange with isotopic water. D7‐Sch 40120 was obtained in two exchanges in 53% yield and ^3^H‐Sch 40120 was prepared by a single exchange at a specific activity of 19.8 Ci/mmole. ^14^C‐Sch 40120 was prepared in 4 steps from