Diels–Alderreactions of a range of 1-(alkoxy/alkyl/halogen-substituted phenyl)buta-1,3-dienes with methyl propiolate carried out in a green ethanolic medium under 9 kbar pressure were investigated. The use of high pressure as activating method of the Diels–Alderreactions allows efficient and regioselective generation of a series of cyclohexadienyl-benzene cycloadducts that are oxidized to the corresponding
研究了在绿色乙醇介质中在9 kbar压力下进行的一系列1-(烷氧基/烷基/卤素取代的苯基)buta-1,3-二烯与丙酸甲酯的Diels-Alder反应。使用高压作为Diels-Alder反应的活化方法,可以高效,区域选择性地生成一系列氧化成相应联芳基的环己二烯基-苯环加合物。产生的烷氧基/烷基/卤素取代的联芳基是用于获得取代的6 H-苯并[ c ] chromen-6-one和大麻酚家族的有用的前体。