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.