## Abstract C^14^‐labelled O,N‐dimethylhydroxyurethane is synthesized from C^14^‐labelled dimethylsulfate and N‐hydroxy‐urethane. It is further converted without purification into O,N‐^14^‐C‐dimethyl‐hydroxylammoniumchloride, which was then nitrosated with sodiumnitrite in acidic medium to give N‐N
Synthesis of carbon-14 disulfide and N,N′-dicyclohexylcarbo-14C-diimide
✍ Scribed by C. W. Perry; W. Burger
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- French
- Weight
- 200 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Methyl‐^14^C iodide of high specific activity was converted to carbon‐14 disulfide in quantitative yield by reaction with phosphorus pentasulfide at 300–325°C. Following literature procedures, N,N′ dicyclohexylcarbo‐^14^C‐diimide was prepared in 54% yield from the carbon‐14 disulfide.
📜 SIMILAR VOLUMES
## Abstract [Methyl‐^14^C]‐N‐methylputrescine was prepared from [^14^C]methylamine hydrochloride in five steps. Reaction of benzaldehyde and [^14^C]methylamine (10 mCi) followed by catalytic hydrogenation yielded [methyl‐^14^C]‐N‐methylbenzylamine. The key step in this process is the alkylation of
## Abstract Synthesis of n‐heptane labelled with carbon‐14 in the 1‐position is described. The precedure involves five steps starting with reaction of [^14^C]carbon dioxide with n‐hexyl magnesium bromide and finishing with reduction of [1‐^14^C]n‐heptyl bromide. The purity of the final product was
## Abstract Irbesartan (Avapro^™^) is in clinical use as an antihypertensive drug. It is a nonpeptide angiotensin II receptor antagonist. A radiolabeled version of this drug, intended for use in environmental fate studies, was prepared from __N,N__‐dimethyl[^14^C]formamide. Our method of synthesis
14C N-2-hydroxyethyl-N-nitrosourea was prepared at a specific activity of 30 mCi/mmol and 1 . 2 9 mCi/mmol by a two-step synthetic sequence using 14C ethanolamine as the labelled precursor. Its puri-fication was performed by IiPLC using a Lichrosorb-DIOL column eluted by ethyl ether.The overall radi