期刊
ASTROBIOLOGY
卷 10, 期 10, 页码 973-988出版社
MARY ANN LIEBERT, INC
DOI: 10.1089/ast.2009.0441
关键词
Prebiotic synthesis; Hydrothermal vents; Thiols; Sulfides; Nickel; Aldehydes; Carbon monoxide; Transition metals; C-C bond formation
资金
- Deutsche Forschungsgemeinschaft (DFG)
- Deutsch-Franzosische Hochschule/Universite Franco-Allemande (DFH/UFA)
- French Ministere de l'Education Nationale et de la Recherche (MENESR) [GRK 532]
- Agence Nationale de la Recherche [ANR-06-BLAN-0151]
- Agence Nationale de la Recherche (ANR) [ANR-06-BLAN-0151] Funding Source: Agence Nationale de la Recherche (ANR)
Laboratory experiments carried out under plausible prebiotic conditions (under conditions that might have occurred at primitive deep-sea hydrothermal vents) in water and involving constituents that occur in the vicinity of submarine hydrothermal vents (e.g., CO, H2S, NiS) have disclosed an iterative Ni-catalyzed pathway of C-C bond formation. This pathway leads from CO to various organic molecules that comprise, notably, thiols, alkylmono- and disulfides, carboxylic acids, and related thioesters containing up to four carbon atoms. Furthermore, similar experiments with organic compounds containing various functionalities, such as thiols, carboxylic acids, thioesters, and alcohols, gave clues to the mechanisms of this novel synthetic process in which reduced metal species, in particular Ni(0), appear to be the key catalysts. Moreover, the formation of aldehydes (and ketones) as labile intermediates via a hydroformylation-related process proved to be at the core of the chain elongation process. Since this process can potentially lead to organic compounds with any chain length, it could have played a significant role in the prebiotic formation of lipidic amphiphilic molecules such as fatty acids, potential precursors of membrane constituents.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据