4-Acetoxy- and 4-Triflyloxy-2,6,6-trimethyl-2,4-cyclohexadienones as Nondimerizing Alternatives to 2,6,6-Trimethyl-2,4-cyclohexadienone. Efficient Synthesis of Several Bicyclo[2.2.2]octenone Derivatives
作者:Ming-Shyong Yang、Shi-Yi Chang、Shyue-Sheng Lu、Polisetti Dharma Rao、Chun-Chen Liao
DOI:10.1055/s-1999-2581
日期:1999.2
4-Acetoxy- and 4-trifyloxy-2,6,6-trimethyl-2,4-cyclohexadienones were employed as non-dimerizing alternatives to 2,6,6-trimethyl-2,4-cyclohexadienone in Diels-Alder reactions with substituted acetylenes which facilitated the synthesis of substituted bicyclo[2.2.2]octen-2,5-diones, bicyclo[2.2.2]octadienones and 5-methylenebicyclo[2.2.2]octen-2-ones.
4-乙酰氧基和4-三氟甲氧基-2,6,6-三甲基-2,4-环己二烯酮被用作非二聚化的替代品,用于与取代乙炔的Diels-Alder反应,从而促进了取代的双环[2.2.2]辛-2,5-二烯酮、双环[2.2.2]辛二烯酮和5-亚甲基双环[2.2.2]辛-2-烯酮的合成。