论文部分内容阅读
模拟实验揭示出:芴系列化合物的形成并不依赖于具有相同碳骨架的生物前身物质,在一定温度条件下,β胡萝卜素可以转化成芴系列,而硫和链状化合物反应可以形成更为丰富的芴系列化合物。β胡萝卜素在芳构化过程中会出现部分甲基脱落、甲基转移等变化,而且甲基上的活泼氢也会部分脱离,这样形成的自由基就可能结合成键形成芴系列;β胡萝卜素在热演化过程中生成的二苯甲烷系列可进一步转化成芴系列;硫在和链状化合物反应时也可能先形成一些二苯甲烷系列化合物,硫继续和这些产物反应会夺取两个苯环上的α位氢形成自由基,当一个苯环上的自由基和另一个苯环上的自由基结合时就可能形成芴系列。芴系列虽然具有生物骨架,但不能被认为是生物标志化合物,因为其地球化学合成作用形成的可能占多数。
The simulation experiments reveal that the formation of fluorene series compounds does not depend on the biological precursors with the same carbon skeleton. Under certain temperature conditions, β-carotene can be converted into fluorene series and the reaction of sulfur and chain compounds can be richer Of fluorene series compounds. β-carotene in the aromatization process will be part of the methyl off, methyl transfer and other changes, and methyl active hydrogen will be partially off, so the formation of free radicals may bond to form a fluorene series; β carrot The diphenylmethane series formed during the thermal evolution can be further converted to the fluorene series. Sulfur may also form some diphenylmethane series compounds upon reaction with the chain compounds. Sulfur continues to react with these products and seizes two benzene rings On the α-position hydrogen forms a free radical, a series of fluorenes may be formed when free radicals on one benzene ring combine with free radicals on the other benzene ring. Although the fluorene series has a biological skeleton, it can not be considered as a biomarker compound because its geochemical synthesis may form the majority.