𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Synthesis of 13C- and 14C-labelled catechol

✍ Scribed by Rong Ji; Andreas Schäffer


Publisher
John Wiley and Sons
Year
2002
Tongue
French
Weight
93 KB
Volume
45
Category
Article
ISSN
0022-2135

No coin nor oath required. For personal study only.

✦ Synopsis


Abstract

^13^C‐ and ^14^C‐uniformly labelled catechol was synthesized from phenol in three steps. Phenol was derivatized with 2‐chloro‐5‐nitrobenzophenone in THF containing NaH, followed by ortho‐hydroxylation with 35% aqueous H~2~O~2~ in sulphuric acid/glacial acetic acid solution, and by cleavage with piperidine, giving an overall 80% yield with respect to phenol. Copyright © 2002 John Wiley & Sons, Ltd.


📜 SIMILAR VOLUMES


Synthesis of 14C-labeled levamisole and
✍ V. J. Feil 📂 Article 📅 1996 🏛 John Wiley and Sons 🌐 French ⚖ 275 KB 👁 2 views

The syntheses of '%-ring labeled levamisole ([-)-2,3,5,6-tetrahydr0-6-phenyl[~'C-UL]imidazo(Z, 1b]thiole) from acetophenone-ring-UL-l'C in 5 steps plus resolution with a 7.5% overall yield, and %,-ring labeled tetramisole ([i]-2,3,5,6-tetrahydro-6-phenyif3 S ]imidaz0[2,?-bjthiazole) from benzene-'%,

Synthesis of 13C-enriched and 14C-labell
✍ Mohammad E. Mehrsheikh; Lane A. Clizbe; Harbhajan Singh; Wr Purdum 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 French ⚖ 314 KB

## Abstract This report describes the synthesis of the ^13^C‐enriched and ^14^C‐labelled title compound starting from isotopically labelled isovaleraldehyde.

Preparation of uniformly 14C-labeled and
✍ Edward H. Chew; J. Richard Heys 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 French ⚖ 326 KB

## Abstract Catechol‐U‐^14^C and hydroquinone‐U‐^14^C were prepared from phenol‐U‐^14^C by mononitration followed by chromatographic separation of __o__‐ and __p__‐nitrophenol‐U‐^14^C. The nitrophenols were separately hydrogenated, and the resulting aminophenols were converted by diazotization foll

Synthesis of two 14C-labelled catechol-O
✍ Carita Karlsson; Erkki Honkanen 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 French ⚖ 162 KB

14C-labelled 3-(3,4dihydroxy-5-nitrophenylmethylidene)-2,4-pentanedione (4 and 14C-labelled E-N,NdiethyI-Zcyano-3-(3,4-dih droxy 5-nitropheny1)acryl-Key words: carbon-14 labelling, synthesis, COMT-inhibitor. amide (5) have been synthesized from (carbonyl-A Clvanillin.

Synthesis of 13C- and 14C-Labeled methan
✍ V. J. Feil; J. K. Huwe; D. M. Dulik; C. Fenselaum 📂 Article 📅 1988 🏛 John Wiley and Sons 🌐 French ⚖ 332 KB

The enzyme catalyzed displacement o f the methyl s u l f o n y l group from pentachlorophenyl methyl sulfone, the pchloroperoxybenzoic a c i d oxidation of methyl mercaptan and the reaction o f m e t h y l l i t h i u n with sulfur dioxide are methods described f o r the synthesis o f i s o t o p i