Ruthenium Catalyzed Selective Regio-and-Mono-Allylation of Cyclic 1,3-Diketones Using Allyl Alcohols as Substrates
作者:Stefan Gruber、Paulâ S. Pregosin
DOI:10.1002/adsc.200900568
日期:2009.12
branched products using substituted allylalcohols as substrates, without acid, base or other additives, under relatively mild conditions. We consider the ruthenium sulfonate to be a “green” alternative in that it usesallylalcohols as substrate, (rather than carbonates, acetates, etc.) and therefore does not waste the leaving group. The catalyst induces rapid double allylation of various 1,3-diketones
新的钌-磺酸盐催化剂的Ru(CP *)(η 3 -C 3 H ^ 5)(p -CH 3 Ç 6 ħ 4 SO 3)2,(CP * =五甲基环戊二烯),迅速和区域选择性单allylates双甲酮的在相对温和的条件下,使用取代的烯丙醇作为底物,不含酸,碱或其他添加剂的支链产品。我们认为磺酸钌盐是一种“绿色”替代品,因为它使用烯丙醇(而不是碳酸盐,乙酸盐等)作为底物,因此不会浪费离去基团。该催化剂使用烯丙醇以高产率诱导各种1,3-二酮的快速双烯丙基化。