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Reactions with thioethoxide ion in dimethylformamide. I. Selective demethylation of aryl methyl ethers

✍ Scribed by Feutrill, GI; Mirrington, RN


Book ID
120971217
Publisher
Commonwealth Scientific and Industrial Research Organisation Publishing
Year
1972
Tongue
English
Weight
561 KB
Volume
25
Category
Article
ISSN
0004-9425

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πŸ“œ SIMILAR VOLUMES


Demethylation of aryl methyl ethers with
✍ G.I. Feutrill; R.N. Mirrington πŸ“‚ Article πŸ“… 1970 πŸ› Elsevier Science 🌐 French βš– 124 KB

In connection with other work, we desired to demethylate a brcminated aryl methyl ether. which also contained an acid-sensitive group elsewhere in the molecule. The common acidic reagents (1,2) were obviously not applicable and, because Grignard reagents are of limited use in the presence of halog

6-O-Demethylation of the Thevinols with
✍ Simonβ€…W. Breeden; Andrew Coop; Stephenβ€…M. Husbands; Johnβ€…W. Lewis πŸ“‚ Article πŸ“… 1999 πŸ› John Wiley and Sons 🌐 German βš– 59 KB πŸ‘ 2 views

In the pursuit of ring-constrained analogues of buprenorphine, we wished to prepare 6-O-demethylated analogues of the thevinols and orvinols. Previously it had been disclosed that lithium aluminum hydride (LAH) in THF containing a chlorinated solvent could achieve this transformation. Here we report

The Reaction of Methyl Tosylate with Hal
✍ Paul MΓΌller; Bernard Siegfried πŸ“‚ Article πŸ“… 1971 πŸ› John Wiley and Sons 🌐 German βš– 495 KB

## Abstract The reactivity of the lithium halides in 83.3% pyridine‐dimethylformamide changes from Cl^βˆ’^ > Br^βˆ’^ > I^βˆ’^ to Br^βˆ’^ > I^βˆ’^ to Br^βˆ’^ > I^βˆ’^ > Cl^βˆ’^ with increasing concentration of the salt from 0 to 0.35 M. This behaviour is explained by ion pairing which reduces the concentration of r