𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Chemistry of acetylenic ethers LVI Di-(alk-1-ynyl) ethers and thioethers

✍ Scribed by L. Brandsma; J. F. Arens

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
326 KB
Volume
81
Category
Article
ISSN
0165-0513

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A number of di‐(alk‐1‐ynyl) thioethers VIII have been synthesized using reaction scheme 1. Except for diethynyl ether VI the compounds are relatively stable.

Reaction scheme 2 has been used to synthesize di‐(prop‐1‐ynyl) ether, a substance exploding at room temperature. An attempt to prepare (HC≡C)~2~O failed; this substance seems to be unstable even at −70°.

📜 SIMILAR VOLUMES

Chemistry of acetylenic ethers. LIX: Alk
Chemistry of acetylenic ethers. LIX: Alk-1-enyl alk-1-ynyl ethers, thioethers and selenoethers
✍ L. Brandsma; J. F. Arens 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 480 KB

## Abstract The compounds listed in tables I and II have been prepared by the reaction schemes A, B and C. Acid hydrolysis of vinyloxyethyne produces vinyl acetate. Rearrangement of 3‐hydroxy‐3‐methyl‐1‐vinyloxy‐1‐butyne XIV by acid gives the vinyl ester of 2,2‐dimethylacrylic acid XV.

Chemistry of acetylenic ethers 69: A new
Chemistry of acetylenic ethers 69: A new synthesis of di-(alk-1-ynyl) thioethers
✍ L. Brandsma 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 192 KB

## Abstract Di‐(alk‐1‐ynyl) thioethers IV have been prepared from 2,2′‐dichlorodivinyl thioether II by converting this compound into metallated diethynyl thioether by means of four equivalents of sodamide in liquid ammonia, followed by alkylation. The starting material II was obtained in a high yie

Chemistry of acetylenic ethers. L. Di(al
Chemistry of acetylenic ethers. L. Di(alk-1-ynyl)sulphides
✍ L. Brandsma; J. F. Arens 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 135 KB

## Abstract Di(but‐1‐ynyl)sulphide (IV, R = C~2~H~5~) and di(prop‐1‐ynyl)sulphide (IV, R = CH~3~) have been prepared as outlined in the reaction scheme.

Chemistry of acetylenic ethers LIV: Addi
Chemistry of acetylenic ethers LIV: Addition of diazo compounds to acetylenic ethers and thioethers
✍ S. H. Groen; J. F. Arens 📂 Article 📅 2010 🏛 Elsevier Science 🌐 English ⚖ 258 KB

## Abstract Ethoxyethyne slowly adds diazomethane to yield 4‐ethoxypyrazole I, the structure of which has been proved by synthesis from 1,1,2,3,3‐pentaethoxypropane IV and hydrazine. Ethylthioethyne V, on the contrary, is converted by diazomethane into 3‐ethylthiopyrazole VI, the structure of which