2-芳基环己烷-1,3-二酮和2-芳基环戊烷-1,3-二酮可以通过简单的两步、一锅法转化为2-芳基-3-叠氮基环烷-2-en-1-酮。这些叠氮化物可以在催化Rh 2 (O 2 CC 7 H 15 ) 4的作用下顺利环化为咔唑酮和吲哚酮。虽然 3-叠氮基-2-苯基环庚-2-en-1-酮可以很容易地从 2-苯基环庚烷-1,3-二酮制备,但相比之下,Rh 催化的环化反应优先于吲哚生成氮丙啶。机理和 DFT 研究补充了综合工作。
2-芳基环己烷-1,3-二酮和2-芳基环戊烷-1,3-二酮可以通过简单的两步、一锅法转化为2-芳基-3-叠氮基环烷-2-en-1-酮。这些叠氮化物可以在催化Rh 2 (O 2 CC 7 H 15 ) 4的作用下顺利环化为咔唑酮和吲哚酮。虽然 3-叠氮基-2-苯基环庚-2-en-1-酮可以很容易地从 2-苯基环庚烷-1,3-二酮制备,但相比之下,Rh 催化的环化反应优先于吲哚生成氮丙啶。机理和 DFT 研究补充了综合工作。
Synthesis of [60]Fullerene-Fused Spiroindanes by Palladium-Catalyzed Oxidative Annulation of [60]Fullerene with 2-Aryl Cyclic 1,3-Dicarbonyl Compounds
作者:Dian-Bing Zhou、Guan-Wu Wang
DOI:10.1021/acs.orglett.6b01043
日期:2016.6.3
A convenient and facile palladium-catalyzedreaction of [60]fullerene (C60) with 2-aryl cyclic 1,3-dicarbonyl compounds via the enolate-directed sp2 C–H activation and sp3 C–H functionalization has been exploited to synthesize the novel and rare C60-fused spiroindanes for the first time. This reaction is easy to perform with broad substrate scope and provides diversified products in 20–50% yields.
Synthesis of 2-Arylpyridopyrimidinones, 6-Aryluracils, and Tri- and Tetrasubstituted Conjugated Alkenes via Pd-Catalyzed Enolic C–O Bond Activation–Arylation
作者:Sankar K. Guchhait、Garima Priyadarshani
DOI:10.1021/acs.joc.5b00771
日期:2015.6.19
the synthesis of biologically important 2-aryl-4H-pyrido[1,2-a]pyrimidin-4-ones and 6-aryluracils via previously unknown Pd-catalyzed enolic C–OH activation–arylation of pyridopyrimidin-2,4-diones and barbituric acids, respectively, with boronic acids is reported. The starting materials are readily available, and products are obtained in high yields. An efficient and chemo- and stereoselective access