作者:Hanna Busch、Florian Stempfle、Sandra Heß、Etienne Grau、Stefan Mecking
DOI:10.1039/c4gc01233j
日期:——
Selective catalytic carbonylation of the trisubstituted double bond of citronellic acid is enabled via an isomerizationâfunctionalization approach. Alkoxycarbonylation with [1,2-(tBu2PCH2)2C6H4}Pd(OTf)2] as a catalyst precursor occurs with >97% selectivity for the terminal diester dimethyl-3,7-dimethylnonane-dioate. This prevails much over the typical cationic methoxyaddition. The reactive primary carboxy group formed allows for e.g. the preparation of the high molecular weight novel polyester poly[3,7-dimethylnonanediyl-3,7-dimethylnonanedioate].
通过异构化和功能化方法,对香茅酸的三取代双键进行选择性催化羰基化。以[1,2-(tBu2PCH2)2C6H4}Pd(OTf)2]为催化剂前体进行烷氧基羰基化反应,对末端二酯二甲基-3,7-二甲基壬烷二酸酯的选择性大于 97%。与典型的阳离子甲氧基加成法相比,这种加成法的选择性更高。所形成的活性伯羧基可用于制备高分子量的新型聚酯聚[3,7-二甲基壬二酸二酯-3,7-二甲基壬二酯]。