In the stereospecific palladiwn-catalyzed cross coupling reaction of I-alkynytzinc chlorides,(E)-1.2-dibromoethylene reacts preferentially in the presence of (ZI-1,2-dibmmoethylene.Rwiucts of di-or mono-substitution can be obtained according to the ratio of reagents.
โฆ LIBER โฆ
Diastereoselective synthesis of (E)-1-trimethylsilyl-3-en-1-ynes by palladium-catalyzed cross-coupling reaction between trimethylsilylethynylzinc chloride and stereoisomeric mixtures of 1-bromo-1-alkenes
โ Scribed by Bianca Patrizia Andreini; Adriano Carpita; Renzo Rossi
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- French
- Weight
- 132 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0040-4039
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โฆ Synopsis
Swnmary: In the stereospecific pallad&m-cata2yzed cross-coupling reaction of trimethytsilylethynylzinc chloride, (El-I-bromo-I-a2kenes react preferentially in the presence of the cowespending (Z)-stereoisomers.
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