Cobalt-catalyzed alkenylation of organomagnesium reagents
✍ Scribed by Gérard Cahiez; Hovsep Avedissian
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- French
- Weight
- 221 KB
- Volume
- 39
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Alkenyl iodides, bromides and chlorides react with organomagnesium reagents in THF, in the presence of Co(acac)2 and NMP (9 to 4 equiv.), to give the cross-coupling products in good yields. The reaction is chemoselective (aryl or alkyl bromides, esters and ketones) and stereoselective (> 99.5%).
📜 SIMILAR VOLUMES
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v
The iodine-magnesium exchange reaction with i-PrMgCl allows a mild preparation of functionalized arylmagnesium compounds bearing a leaving group in the molecule. With the appropriate transition-metal catalyst (a copper or cobalt salt), cyclization reactions occur leading to five-or six-membered ring