Chemistry of acetylenic ethers. LIII: Conversion of acetylenic ethers into α-ketoesters
✍ Scribed by W. W. Wisaksono; J. F. Arens
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 128 KB
- Volume
- 80
- Category
- Article
- ISSN
- 0165-0513
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract A number of 1‐methoxy‐1‐alkynes and some other acetylenic ethers were prepared using the procedure outlined in the reaction scheme. The yields were satisfactory.
## Abstract 4‐Hydroxyalkynyl ethers can be prepared from epoxides and ethoxyethynyllithium in liquid ammonia or bis‐ethoxyethynylmagnesium in ether‐tetrahydrofuran. Under other conditions, notably in the presence of metal halides other products are obtained, including halohydrins and 3‐hydroxyalky
## 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
## Abstract Acetylenic ethers of the types RCH~2~CCCH~2~OR′ and RCH~2~CH~2~CCOR′ have been converted into alkenynylides RCHCHCCNa and alkoxides R′ONa by treatment with two moles of sodamide in liquid ammonia.