5448-01-1Relevant academic research and scientific papers
Oxidative annulation of anilides with internal alkynes using an (Electron-Deficient η5-cyclopentadienyl)rhodium(III) catalyst under ambient conditions
Hoshino, Yuki,Shibata, Yu,Tanaka, Ken
, p. 1577 - 1585 (2014/06/09)
A dinuclear (electron-deficient η5-cyclopentadienyl) rhodium(III) complex was synthesized on a preparative scale via the rhodium-catalyzed cross [2+2+1] cyclotrimerization of silylacetylenes and two alkynyl esters, leading to substituted silylf
Diborane as reducing agent: Part VII - Novel reduction of indole-1-ketones to 1-alylindoles to 1-alkylindoles and mechanism of reduction of indole-1-aldehydes and ketones
Biswas, K M,Dhara, R N,Mallik, Haimanti,Halder, Sumita,Sinha-Chaudhuri, Arunima,et al.
, p. 906 - 910 (2007/10/02)
Borane/THF reduction of nine indole-1-ketones (1a-1i) forms 1-ethylindoles (6a-6h) and the 1-benzylindole (6i) in 50-80percent yields.The ketones 1h and 1i, each of which bears phenyl groups at positions 2 and 3, also undergo deacylation to furnish 2,3-diphenylindole (8) in ca. 40percent yield.The mechanism of formation of both 8 and 6a-6i have been rationalised.The rate of borane/THF reduction of 1 is apparently slower than that of indole-1-carboxaldehydes (9).An attempt has been made to throw some light on the cause of this difference.
Indolization by Phosphorus Trichloride of Functionalized Ketone Arylhydrazones: Synthesis of Pharmacological Interesting Indoles
Baccolini, Grazieno,Dalpozzo, Renato,Todesco, Paolo E.
, p. 971 - 974 (2007/10/02)
The synthesis of indoles starting from phosphorus trichloride and arylhydrazones either functionalized in the ketone entity or N-substituted is reported.The reaction, carried out at room temperature, allows several substituents on the ketone framework of the hydrazone (e.g. ether, alkoxycarbonyl, halogeno, dialkylamino, olefinic, and phosphonic).Under optimum conditions high product yields were obtained.Evidence for the proposed mechanism is also reported.
