56699-62-8Relevant articles and documents
The reaction of α,β-acetylenic ketones with dicyclohexylborane: Stereoselective synthesis of functionalized trisubstituted olefins
Kabalka, George W.,Yu, Su,Li, Nan-Sheng,Lipprandt, Ute
, p. 37 - 40 (1999)
Allenoxyborinates, easily generated via the 1,4-addition of dicyclohexylborane to α,β-acetylenic ketones, react in situ with excess starting ketone to afford stereodefined, functionalized trisubstituted olefins in high yields.
The Autoxidation of Hept-3-yne
Brose, Th.,Pritzkow, W.,Sebald, F.,Voerckel, V.
, p. 951 - 956 (2007/10/02)
In the reaction mixtures of the oxidation of hept-3-yne with molecular oxygen as products of the attack on the C-C triple bond heptane-3,4-dione, propionic and butyric acids and a very small amount of 2-ethylvaleric acid were found.Hept-2-en-4-one and hept-3-en-5-one were probably present, but could not be identified unambiguously.As in the case of the isomeric octynes the main primary reaction products were the hydroperoxides formed by attack on the C-H bonds in α-position to the CC triple bond.
Z/E-Isomerization of Unsaturated Carboxylic Acids during the Kolbe Electrolysis
Huhtasaari, Matti,Schaefer, Hans J.,Luftmann, Heinrich
, p. 537 - 548 (2007/10/02)
Z-4-Enoic acids partially isomerize to E-configurated products in the Kolbe electrolysis.The results from methyl and deuterium labelled carboxylic acids 2 and 16 support an isomerization via a reversible ring closure to cyclopropylcarbinyl radicals.The double bonds of Z-N-enoic acids with N>/= 5 fully retain their configuration in the Kolbe electrolysis; for N=6,7 cyclic products are formed to some extent, which is in accord with the reactivity of 5- and 6-alkenyl radicals.
