## Abstract A general method for microscale synthesis of ^14^C‐labeled indole‐3‐acetic acids with halogen substitutions in the benzene ring is described. The method utilizes halogen substituted phenylhydrazines reacted with [^14^C]‐2‐oxoglutarate to generate the halogenated indole‐3‐acetic acid. 3‐
Synthesis of 14C-labeled indole-3-acetylaspartic acid
✍ Scribed by Jerry D. Cohen
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- French
- Weight
- 161 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
The synthesis of indole‐3‐acetyl‐2‐^14^C‐N‐aspartic acid from carrier‐free indole‐3‐acetic acid‐2‐^14^C (54.5 mCi/mmole) and bis‐t‐butyl‐l‐aspartic acid was accomplished by coupling with dicyclohexylcarbodiimide followed by removal of the ester blocking groups by treatment with 2 N NaOH.
📜 SIMILAR VOLUMES
14C-labeled chlorogenic acid (specijic activity 30.6 nCilmg) was synthesized by reaction of diphenylmethyl-I-0-ethoxy-carbonyl- 4,5-0-isopropylidenequinate ( V ) with 0,O-dimethylcarbonyl caffeoyl chloride-u-14C (VIII) followed by selective hydrolysis of the protecting groups.
## Abstract A widely used herbicide, 2,2‐dichloropropionic acid (dalapon), was synthesized with ^14^C‐labeling in the C‐1 or C‐2 positions. The carboxyl labeled material was prepared in 55% yield by carbonation of 1,1‐dichloro‐ethyllithium at approximately −104°. Starting with trichloroacetic acid,
## Abstract Org 37462 (1) is the active ingredient in Orgalutran^®^, an innovative product that reduces the time of treatment in __in vitro__ fertilization from four to less than two weeks. Org 37462 is a synthetic decapeptide containing several amino acids that are unnatural in stereochemistry and
## Abstract Mepindolol, a potent ß‐adrenoceptor blocking agent, was labelled with ^14^C by two different routes yielding the 2‐[^14^C]methyl and [2‐^14^C] products. While the first alternative was abandoned because of low overall yield, the latter route provided mepindolol with a specific activity
## Abstract A versatile method for ^14^C labeling of 2‐methoxypyrimidine‐5‐carboxylic acid at the 2‐position has been developed after encountering difficulties with traditional approaches to label the carboxyl function. The method developed can also be used for ^14^C labeling other positions of the