ChemInform Abstract: Regio- and Stereoselective Synthesis of 1,4-Dienes.
β Scribed by Shigeki Oishi; Keisuke Hatano; Akira Tsubouchi; Takeshi Takeda
- Publisher
- John Wiley and Sons
- Year
- 2012
- Weight
- 14 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0931-7597
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## Abstract The palladiumβcatalyzed haloallylation of alkynes (I) in dichloromethane leads stereoselectively to (E)βdihalodienes (III), whereas (Z)βisomers (IV) are readily obtained by the same reaction in acetic acid in the presence of lithium halides.
Nickel-Catalyzed Regio-and Stereoselective Homo 1,4-Dialkenylation of Conjugated Dienes. -An unusual regio-and stereoselective nickelcatalyzed reaction of conjugated dienes with iodoenones (II) is presented leading to homodialkenylation of the dienes. For butadiene (I) only 1,4-addition products wi