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Results tagged with wittig-reactions
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user 41686
This tag should be applied to questions about the Wittig reaction and its variants, including the Horner–Wadsworth–Emmons reaction.
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Wittig reaction in presence of carboxylic acids
This works because the acidic starting material is going to be deprotonated as there is excess bicarbonate present. Because of the adjacent carboxylate group, the pKa of the phosphonium species is goi …
- 23k
6
votes
What will be the major product of the reaction between (2R,3R)-2,3-dimethyloxirane and triph...
Think about how the PPh3 first reacts with the epoxide - it does a nucleophilic attack on one of the carbons from below the epoxide ring to give the intermediate shown below left (I have drawn the P s …
- 71.9k
1
vote
how can i synthesis unsaturated ester via wittig reaction?
A good system for this is using DBU as the base in refluxing chloroform. Bull. Chem. Soc. Japan (2003) 76 1675
- 23k