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6.1.6.3.2 Method 2: Dehydrohalogenation of Alkenes

DOI: 10.1055/sos-SD-106-00126

Molander, G. A.; Beaumard, F.Science of Synthesis Knowledge Updates, (20133118.

For those terminal alkynes that are not commercially available, the alkynyllithium derivative can be prepared in situ via an elimination process from the corresponding alkenyl halides. This protocol has been effectively used in the synthesis of perfluoroalkyl-substituted alkynyltrifluoroborates such as 18 (Scheme 19).[‌41‌]

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