کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1323489 | 977290 | 2007 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Synthesis and resolution of 2-(diphenylphosphino)heptahelicene Synthesis and resolution of 2-(diphenylphosphino)heptahelicene](/preview/png/1323489.png)
Palladium catalysed Heck couplings have been applied to the two-step synthesis of a stilbene derivative bearing a diphenylphosphine oxide function which represents a suitable precursor for the photochemical generation of the corresponding [7]-helicene. After reduction of the phosphine oxide, resolution of the monodentate helical phosphine has been performed by means of the ortho-metallated (R)-1-(naphthyl)ethylamine–palladium complex. A ruthenium complex of (heptahelicen-2-yl)diphenylphosphine has also been prepared and fully characterized.
(Heptahelicen-2-yl)diphenylphosphine oxide has been obtained via photocyclization of a stilbene derivative. After reduction of the phosphine oxide, resolution of the monodentate helical phosphine has been performed by means of the ortho-metallated (R)-1-(naphthyl)ethylamine palladium complex.Figure optionsDownload as PowerPoint slide
Journal: Journal of Organometallic Chemistry - Volume 692, Issue 5, 1 February 2007, Pages 1156–1160