β-Chloro-α,β-unsaturated carbonyls as convenient precursors of highly substituted benzenes
作者:T. M. Barhoumi-Slimi、M. Ourévitch
DOI:10.1007/s13738-017-1263-1
日期:2018.3
β-chloro-α,β-unsaturated carbonyl compounds 1–3 with different dienes were carried out to afford highly functionalized cyclohexenes 4–9, bearing quaternary centers, in good yields. These cycloadducts (CAs) undergo dehydrochlorination with subsequent aromatization in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene DBU to produce new substituted benzenes 11–14. Compound 10 is the product of lactonization