A Convenient Stereoselective Synthesis of 1,3-Dienylphosphonates and 1-En-3-ynylphosphonates and Their Phosphine Oxide Analogs
- 1 July 1995
- journal article
- research article
- Published by Georg Thieme Verlag KG in Synthesis
- Vol. 1995 (07) , 769-771
- https://doi.org/10.1055/s-1995-4000
Abstract
Ethynylphosphonates (or phosphine oxides) react with a lithium halide in acetic acid at 70°C to yield (Z)-2-halovinylphosphonates (or phosphine oxides), which give (1Z,3E)-dienylphosphonates and (1Z)-en-3-ynylphosphonates (phosphine oxides) after coupling with alkenes and alkynes, respectively, in the presence of a palladium catalyst.Keywords
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