Diene Condensation of Cyclopentadiene with Dienophiles of Allylacetylene Series
作者:M. G. Veliev、A. Z. Chalabieva、M. I. Shatirova、E. G. Akperova
DOI:10.1023/b:rujo.0000003159.15212.50
日期:2003.6
Diene condensation of cyclopentadiene with 2-substituted allylacetylenes occurs nonselectively at a double and triple bonds; therewith the dienophile activity grows in parallel with the electron-withdrawing properties of the substituent. Depending on electronic character of functional groups the reaction proceeds as ''neutral" diene synthesis. The relative activity of cyclopentadiene and 1,3-cyclohexadiene in reactions with allylacetylenes is essentially governed by the different distance between the 1,4-reactive sites in these systems.
Diene condensations of hexachlorocyclopentadiene and 5,5-dimethoxytetrachlorocyclopentadiene were carried out with dienophiles of allylacetylene series. The reaction was demonstrated to proceed stercospecifically yielding adducts of the endo-configuration. The reactivity of functionalized allylacetylene compounds in the diene synthesis with hexachlorocyclopentadiene was studied, and the reaction was established to occur by the type of a "neutral" diene synthesis. It was established that the Faworsky decomposition of polychlorobicyclic alcohols containing in the side chain a triple bond adjacent to a methylene group occurred with acetylene-allene isomerization.
MXITARYAN G. R.; KINOYAN F. S.; XRIMYAN A. P.; BADANYAN SH. O., ARM. XIM. ZH., 1979, 32, NO 2, 113-119
作者:MXITARYAN G. R.、 KINOYAN F. S.、 XRIMYAN A. P.、 BADANYAN SH. O.
DOI:——
日期:——
Petrov,A.A.; Porfir'eva,Yu.I., Journal of General Chemistry of the USSR, 1963, vol. 33, p. 413 - 420