Ruthenium-Catalyzed Homo Diels–Alder [2 + 2 + 2] Cycloadditions of Alkynyl Phosphonates with Bicyclo[2.2.1]hepta-2,5-diene
作者:Tanner J. Kettles、Neil Cockburn、William Tam
DOI:10.1021/jo2010928
日期:2011.8.19
Ruthenium-catalyzed homo Diels–Alder [2 + 2 + 2] cycloadditions between alkynyl phosphonates and bicyclo[2.2.1]hepta-2,5-diene were studied. The observed reactivity was found to be dependent on the presence of the phosphonate moiety. The Ru-catalyzed cycloaddition was compatible with a variety of aromatic and aliphatic substituted alkynyl phosphonates, providing the corresponding phosphonate substituted
研究了炔基膦酸酯与双环[2.2.1]庚-2,5-二烯之间钌催化的均Diels-Alder [2 + 2 + 2]环加成反应。发现观察到的反应性取决于膦酸酯部分的存在。Ru催化的环加成反应可与多种芳族和脂族取代的炔基膦酸酯相容,从而以低至良好的收率(高达88%)提供相应的膦酸酯取代的δ-环戊烯。