ChemInform Abstract: A Totally Stereoselective Synthesis of (Z)-2-Arylidene-1,4- benzodioxanes Using Palladium-Copper Catalysis.
✍ Scribed by C. CHOWDHURY; N. G. KUNDU
- Book ID
- 112037379
- Publisher
- John Wiley and Sons
- Year
- 2010
- Weight
- 29 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0931-7597
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## Abstract A general one‐pot Pd‐catalyzed synthesis of the target compounds (E)‐3‐arylidene‐1,4‐benzoxazines starts from inexpensive and readily available starting materials.
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## Abstract The palladium‐catalyzed haloallylation of alkynes (I) in dichloromethane leads stereoselectively to (E)‐dihalodienes (III), whereas (Z)‐isomers (IV) are readily obtained by the same reaction in acetic acid in the presence of lithium halides.