A novel synthesis of functionalized ketones via a nickel-catalyzed coupling reaction of zinc reagents with thiolesters
โ Scribed by Toshiaki Shimizu; Masahiko Seki
- Publisher
- Elsevier Science
- Year
- 2002
- Tongue
- French
- Weight
- 62 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
โฆ Synopsis
N Ph(CH 2 ) 3 COS DMF Ph(CH 2 ) 3 O n-Bu n-BuI + NiCl 2 , Zn 50 o C, 5 h 2 46% 1 DMF (CH 2 ) 2 COSEt MeO MeO O (CH 2 ) 4 -CO 2 Et (CH 2 ) 2 + I-(CH 2 ) 4 -CO 2 Et 3a 6 5a NiCl 2 , Zn 50 o C, 5 h TETRAHEDRON LETTERS
๐ SIMILAR VOLUMES
Stereoselective Synthesis of Heterocyclic Zinc Reagents via a Nickel-Catalyzed Radical Cyclization. -Starting from iodides such as (I), (VI), and (X) or bromides such as ( XIII) and (XVI) a convenient method for the preparation of substituted furans is presented. In this one-pot procedure the inter
Unsymmetrical biaryls containing "reactive" functional groups (e.g., nitrile or ester groups) can be synthesized in an efficient manner by the direct Ni-or Pd-catalyzed coupling of aryl halides (X = CI, Br, I) with aryl Grignard (or -lithium) reagents, provided that a catalytic amount of a Zn or Cd
A variety of ketones have been prepared by a palladium-catalyzed reaction of ethanethiol esters with organozinc reagents. Various functional groups, including esters, ketones, aromatic halides and aldehydes, tolerate the reaction conditions. The reaction can also be applied to the synthesis of t~-am