So far, the best I have found is the reaction between acetylene and formaldehyde in the aqueous phase to give 1,4-butynediol however this would still
require a catalytic hydrogenation or the like. Never the less it doesn't sound like a bad procedure, it is described in a few patents such as US
4149004 and German patent 2421407 which is also avalible as the US patent 3957888 each calling for specially prepared copper catalysts.
Sounds pretty nifty though, I have a pound of calcium carbide and I'm sure I can round up some formaldehyde, as for the hydrogenation, US patent
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