1,5-Phosphonium betaines from N-triflylpropiolamides, triphenylphosphane, and active methylene compounds
N-Phenyl-N-(trifluoromethylsulfonyl)propiolamides react with triphenylphosphane in the presence of various active methylene compounds CH2XY in a 1:1:1 molar ratio to furnish 1-phosphonium-5-oxabetaines, Ph3P+–C(R)=CH–C(O–)=CXY. These betaines are formed preferentially, but not exclusively, as E-dias...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Beilstein-Institut
2019-11-01
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| Series: | Beilstein Journal of Organic Chemistry |
| Subjects: | |
| Online Access: | https://doi.org/10.3762/bjoc.15.253 |