Add time:08/11/2019 Source:sciencedirect.com
Horner-Wadsworth-Emmons condensation of (α-fluoropropargyl) phosphonate ester 3 and p-anisaldehyde provides a new method for the synthesis of monofluoro-conjugated enynes. Spontaneous crystallization of 4 yielded the Zisomer of 2-fiuoro-1-(p-methoxyphenyl)-1-penten- 3-yne. A comparison of bond angles and distances between 4 and vinylacetylene showed shorter bond distances along the enyne system in 4.
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