No abstract

The ability of acetylenic systems to participate in intramolecular reactions proceeding via six-membered cyclic transition states has been established by thermolyses of a number of substituted /3-hydroxyacetylenes, in both the vapor and the liquid states. Thermolyses products consisted solely of those alienes and carbonyl compounds derivable from a 1,5-hydrogen transfer. The homogeneous reactions followed the first-order rate law. Activation energies with a variety of alkyl substituents were essentially within experimental error.

No abstract

retention time was assigned the dl structure (see Results): nmr (CDC1.) 8 7.3-6.8 (m, 5) and 4.0 (m, l);24 mp 73-75°.

No abstract