𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Small-scale preparation of 14C2-pentaerythritol

✍ Scribed by Alexander B. Susàn; William P. Duncan

Publisher
John Wiley and Sons
Year
1981
Tongue
French
Weight
157 KB
Volume
18
Category
Article
ISSN
0022-2135

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

^14^C~2~‐Pentaerythritol (^14^C‐PE) at approximately 8 mCi/mmole was prepared in 76% yield on a 3‐mmole scale via a base‐catalyzed condensation of acetaldehyde‐^14^C~2~ with 1.5% aqueous CH~2~O.

📜 SIMILAR VOLUMES

Micro-scale preparation of 4-thiouracil
Micro-scale preparation of 4-thiouracil labelled with 14C or 14C + 35S
✍ J. Seda; L. I. Votruba; R. Tykva 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 French ⚖ 308 KB

## Abstract A selective and quantitative method was developed for a microscale preparation of 4‐thiouracil‐2‐^14^C by the direct thiation of uracil‐2‐^14^C. From pyridine, dioxane, and tetralin as the thiation solvents, the best yield was obtained in dioxane (96.6% of 4‐thiouracil‐2‐^14^C). The sim

Preparation of 14C2-cis-1,2-dichloroethy
Preparation of 14C2-cis-1,2-dichloroethylene from 14C2-trichloroethylene using a cobalt porphyrin catalyst
✍ Todd D. DeJournett; Joseph M. Fritsch; Kristopher McNeill; William A. Arnold 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 French ⚖ 116 KB

A protocol for producing 14 C 2 -cis-1,2-dichloroethylene ( 14 C 2 -cis-DCE) from 14 C 2trichloroethylene ( 14 C 2 -TCE) was developed as an economical alternative to commercial, custom synthesis of 14 C 2 -cis-DCE. The method uses 5,10,15,20tetrakis-(4-carboxyphenyl) porphyrin cobalt(II) as a catal

Small-scale degradation of carbon-14 lab
Small-scale degradation of carbon-14 labelled carboxyl acids. III. Degradation of acetic acid−14C
✍ R. Numrich; R. F. Nystrom 📂 Article 📅 1971 🏛 John Wiley and Sons 🌐 French ⚖ 295 KB

A simple atid rapid degradation procedure is described jor the determination of the millirnolar radioactivity of the methyl and carboxyl groups in carbon-14 labelled acetic acid, The barium salt of the acid is converted to barium carbonate and carbon dioxide by using pyrolysis in tandem wit17 combus

Preparation of sodium 2-mercapto-[14C]et
Preparation of sodium 2-mercapto-[14C]ethanesulfonate
✍ J. Jarý; V. Grossmann; S. Doležal; J. Labsk´ 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 French ⚖ 190 KB

Starting from C1-14Cl ethanol 1 , 2-dibrom-C14C1ethane was prepared by an usual method through C14C3ethylene. Sodium sulfite was alkylated by 1,2-dibrom--C Clethane and the formed sodium 2-br0m-L~~Clethane sulfonate was transferred without isolation to a labelled 2-I: (aminoiminomethyl) thiol -C14C1