Acetylene derivs alkoxyacetylenes

Syntheses with boranes and acetylene derivs. Allyl-type rearrangement a-Alkoxystyrenes from alkoxyacetylenes... 

The kinetic law is generally of the type rate = A 2 [acetylene] [H+]. In concentrated acid solutions, the plot of log koha vs H0 in the case of compounds 2 is linear with essentially unit slope (Noyce et al., 1965, 1967 Noyce and De Bruin, 1968). The study of the reaction in a series of buffers showed that it is subject to general acid catalysis (Noyce and Schiavelli, 1968a Stamhuis and Drenth, 1961) and the application of the Bunnett, Grunwald and similar treatments in the case of thio-alkoxyacetylene derivatives (Hogeveen and Drenth, 1963b) clearly indicate that the addition of a water molecule does not take place in the slow step of the reaction. 

Alkenes s. Ethylene derivatives Alkenynes s. Enynes Alkoxyacetylenes (s. a. l-Alkoxy-4-hydroxy-acetylenes)... 

---