𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Preparation of carbon-14 labelled ampropylfos (1-[14C]-α-aminopropanephosphonic acid)

✍ Scribed by Harry R. Hudson; Fatima Ismail

Publisher
John Wiley and Sons
Year
2001
Tongue
French
Weight
71 KB
Volume
44
Category
Article
ISSN
0022-2135

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

1‐[^14^C]‐α‐Aminopropanephosphonic acid, with a specific activity of 1.736 µCi mg^−1^, has been prepared from 1‐[^14^C]‐propanal, triphenyl phosphite, and benzyl carbamate by interaction in toluene in the presence of boron trifluoride‐etherate, followed by hydrolysis. The product was shown by single crystal X‐ray diffraction to be structurally identical to an unlabelled specimen. Copyright © 2001 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Synthesis of carbon-14 labeled [1-14C]-,
Synthesis of carbon-14 labeled [1-14C]-, and [2-14C]-L-tyrosine
✍ W. Augustyniak; R. Kański; M. Kańska 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 French ⚖ 96 KB

## Abstract Two labeled isotopomers of L‐tyrosine, L‐Tyr, have been synthesized using specific properties of the enzymes phenylanine ammonia lyase, PAL, and L‐phenylalanine hydroxylase. In an intermediate step [1‐^14^C]‐, and [2‐^14^C]‐L‐phenylalanine, L‐Phe, have been obtained from [1‐^14^C]‐, and

Preparation of carbon-14 labelled guazat
Preparation of carbon-14 labelled guazatine (1,17-BIS- [14C]-guanidino-9-azaheptadecane triacetate)
✍ H. R. Hudson; M. Pianka; Mrs. L. Powroznik; V. P. Lynch 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 French ⚖ 160 KB

## Abstract 1,17‐Bisguanidino‐9‐azaheptadecane triacetate(Guazatine)has been prepared with carbon‐14 labelling of the guanidine carbon atoms, by interaction of 1,17‐diamino‐9‐azaheptadecane with S‐methyl‐ ^14^C ‐isothiouronium sulphate. The initial product was purified by precipitation as the carbo

Preparation of 14C-labelled poly(ℓ-menth
Preparation of 14C-labelled poly(ℓ-menthyl isopropenyl carbonates)
✍ Roger A. Comes; Harvey J. Grubbs 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 French ⚖ 275 KB

## Abstract The synthesis of ^14^C‐labelled poly(ℓ‐menthyl isopropenyl carbonate) is described. Experimental conditions are included for incorporation of ^14^C into each of the carbon atoms in the molecule. High pressure liquid chromatography conditions are given for separation and purification of

Preparation of 14C-labelled dimethylsila
Preparation of 14C-labelled dimethylsilane-1,1-diol
✍ J. A. Cella; J. C. Carpenter 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 French ⚖ 199 KB

## Abstract The preparation of ^14^C‐labelled dimethylsilane‐1, 1‐diol in two steps from ^14^C‐labelled diphenyldimethylsilane is described. Aluminum chloride catalyzed protodesilylation of diphenyldimethylsilane with HCl in dichloromethane or dimethyldichlorosilane at 0–5°C affords labelled dimeth

Synthesis of carbon-14 labeled 1,4-benzo
Synthesis of carbon-14 labeled 1,4-benzodiazepnies. II.(1) diazepam-14C, demethyldiazepam-14C, and ketazolam-14C
✍ Richard S. P. Hsi 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 French ⚖ 287 KB 👁 1 views

## Abstract Diazepam‐^14^C and demethyldiazepam‐^14^C are synthesized from glycine‐1‐^14^C. Addition of diketene to diazepam‐^14^C leads to ketazolam‐^14^C. The reaction conditions for the formation of ketazolam from diazepam is studied using high‐pressure liquid chromatography in conjunction with

Facile and economical preparation of [14
Facile and economical preparation of [14C]-labelled shikimic acid
✍ Annette Krüper; Peter Gehrke; Nikolaus Amrhein 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 French ⚖ 224 KB

## Abstract A convenient and inexpensive method for the preparation of [^14^C]‐labelled shikimic acid based on the photoassimilation of ^14^CO~2~ by henbane (__Hyoscyamus niger L.__) leaves in the presence of the herbicide glyphosate is described. Methanolic extracts were purified by successive an