13 C 4 , 15 N 2 ]Pyrrolotriazinone, 1, was synthesized in six steps from ethyl (1,2,3,4-13 C 4 )acetoacetate and ( 15 N)ammonium hydroxide. A total of 1.3 g [ 13 C 4 , 15 N 2 ]pyrrolotriazinone was obtained in an overall yield of 17% based on isotopic ethyl acetoacetate. Chemical purity was determi
Synthesis of tetrazole-13C and 1,2,4-triazole-1,2-15N2
✍ Scribed by Roger S. Rowlett; Thomas Klysa; William W. Shiraki
- Publisher
- John Wiley and Sons
- Year
- 1990
- Tongue
- French
- Weight
- 141 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0022-2135
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✦ Synopsis
Abstract
We report here the syntheses of tetrazole‐^13^C and 1,2,4‐triazole‐1,2‐^15^N~2~ by simple, one‐step procedures using common, commercially available, isotopically‐labeled starting materials. tetrazole‐ ^13^C is conveniently prepared from K^13^CN and NaN~3~ in 70% yield, almost twice the best reported yield for (unlabeled) tetrazole by similar synthetic methods. 1,2,4‐triazole‐1,2‐^15^N~2~ was synthesized in 35% yield from hydrazine‐^15^N~2~ sulfate and 1,3,5‐triazine. From ^15^N‐NMR we determined that ^15^N was specifically incorporated into the 1 and 2 positions of the triazole ring.
📜 SIMILAR VOLUMES
## Abstract The synthesis of (±)‐[1,1′‐^15^N~2~, 2′‐^13^C]‐__trans__‐3′‐methylnicotine is reported. ^15^N‐3‐Bromopyridine obtained from bromination of pyridine was formulated with nBuLi/[carbonyl‐^13^C]‐methyl formate. The resulting ^15^N‐Pyridine‐3‐[^13^C‐carbonyl]‐carboxaldehyde was reacted with
## Abstract [2‐^13^C, 2‐^14^C]2‐Aminoethanol hydrochloride was prepared in good yield from Na\*CN in a two step sequence by first converting the Na\*CN to OHCH~2~\*CN and then reducing the nitrile directly with a solution of borane‐tetrahydrofuran complex. The reaction procedure was simple and the