The suspected environmental contaminants phenanthro[2,3-h]isoquinoline 12 and phenanthro[3,2-h]isoquinoline 11 were synthesized in four steps from a common intermediate 1,4-phenanthroquinone 3, using a Diels-Alder reaction.

中文翻译：

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菲[2,3- h ]异喹啉和菲[3,2- h ]异喹啉的合成

使用Diels-Alder反应，从一个常见的中间体1,4-邻苯二醌3中分四个步骤合成了可疑的环境污染物phenothro [2,3- h ] isoquinoline 12和phenanthro [3,2- h ] isoquinoline 11。