Results 231 to 240 of about 105,486 (290)
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Nature Reviews Chemistry, 2021
The seminal paper by Yves Chauvin and Jean-Louis Herisson on the mechanism of alkene metathesis is elegant, simple and insightful. Published more than 50 years ago, it deserves appreciation and admiration even today.
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The seminal paper by Yves Chauvin and Jean-Louis Herisson on the mechanism of alkene metathesis is elegant, simple and insightful. Published more than 50 years ago, it deserves appreciation and admiration even today.
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Chemistry – A European Journal, 2008
AbstractSilylmetalation of alkenes is challenging due to the low reactivity of the substrates. In contrast, carbometalation of alkenes has been realized through several innovative methods, including activation of the reagent and the substrate. A similar approach could be applicable to silylmetalation of alkenes, and we have recently developed a bimetal
Shinji, Nakamura +2 more
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AbstractSilylmetalation of alkenes is challenging due to the low reactivity of the substrates. In contrast, carbometalation of alkenes has been realized through several innovative methods, including activation of the reagent and the substrate. A similar approach could be applicable to silylmetalation of alkenes, and we have recently developed a bimetal
Shinji, Nakamura +2 more
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2020
Visualising molecules in 3D is hard. Fortunately, chemists use quite a few of the important stereochemical concepts and terms to describe the shapes of more 2D molecules, like alkenes. So, even if you really came to this book to learn about chirality and conformations in molecules with sp3 carbon atoms, we suggest you venture first into the sp2 world ...
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Visualising molecules in 3D is hard. Fortunately, chemists use quite a few of the important stereochemical concepts and terms to describe the shapes of more 2D molecules, like alkenes. So, even if you really came to this book to learn about chirality and conformations in molecules with sp3 carbon atoms, we suggest you venture first into the sp2 world ...
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1996
This chapter considers the relations between alkanes, alkenes, and alkynes, noting that the first general characteristic of alkenes and alkynes is their tendency to be attacked by electrophiles. It mentions that the spherical s orbital of C may be regarded as near to the positive nucleus, while the pear-shaped p orbital may be considered as farther ...
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This chapter considers the relations between alkanes, alkenes, and alkynes, noting that the first general characteristic of alkenes and alkynes is their tendency to be attacked by electrophiles. It mentions that the spherical s orbital of C may be regarded as near to the positive nucleus, while the pear-shaped p orbital may be considered as farther ...
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Highly Efficient Alkene-Alkene and Arene-Alkene Coupling Reactions with Vicinal Dibromides
Synlett, 1990Palladium-catalyzed twofold coupling reactions of 1,2-dibromocycloalkenes 4, 7 with alkenes 2 give high yields of (E,Z,E)-1.3,5-hexatrienes 5, 8 which thermally cyclize to ringannulated 1,3-cyclohexadienes 6, 9. Two-, three- and fourfold Heck type coupling reactions were also achieved with vicinal di-13, tri- 16, and tetrabromobenzene 18 under ...
Annegret Lansky +2 more
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ChemInform, 1991
Publisher Summary The method for asymmetric epoxidation of alicyclic alcohols is known as Sharpless. The success of this method initiated much research into other techniques of asymmetric oxidation of alkenes in general and this chapter considers the progress in the area for the last six years.
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Publisher Summary The method for asymmetric epoxidation of alicyclic alcohols is known as Sharpless. The success of this method initiated much research into other techniques of asymmetric oxidation of alkenes in general and this chapter considers the progress in the area for the last six years.
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Visible-light photocatalytic di- and hydro-carboxylation of unactivated alkenes with CO2
Nature Catalysis, 2022Lei Song, Si-Shun Yan, Da-Gang Yu
exaly
Palladium-catalysed enantioselective diacetoxylation of terminal alkenes
Nature Catalysis, 2021Bing Tian, Pinhong Chen, Xuebing Leng
exaly