PdI2-catalyzed coupling-cyclization reactions involving two different 2,3-allenols: An efficient synthesis of 4-(1′,3′-dien- 2′-yl)-2,5-dihydrofuran derivatives

Article abstract of DOI:10.1002/chem.200800167

Transition-metal-catalyzed dimeric coupling-cyclization reactions of two different 2,3-allenols afforded 4-(1′,3′-dien-2′-yl)-2,5- dihydrofuran derivatives 3. 2-Substituted 2,3-allenols 1 cyclized to form the 2,5-dihydrofuran ring, whereas the 2-unsubstit