1252617-33-6Relevant articles and documents
Visible Light Activated Radical Denitrative Benzoylation of β-Nitrostyrenes: A Photocatalytic Approach to Chalcones
Tripathi, Shubhangi,Kapoor, Ritu,Yadav, Lal Dhar S.
, p. 1407 - 1413 (2018)
A metal-free, convenient photocatalytic approach to chalcones from β-nitrostyrenes and benzaldehydes via a radical denitrative benzoylation pathway is reported. The salient features of the protocol include the utilization of visible light as an inexpensive and ecosustainable energy source, N-hydroxyphthalimide (NHPI) as a reusable organophotocatalyst and acetonitrile as an acceptable green solvent to afford chalcones in excellent yields at room temperature in a one-pot procedure. Notably, this is the first application of β-nitrostyrenes as readily available substrates for chalcone synthesis and the first example of photocatalysis in this field. (Figure presented.).
Silver-catalyzed decarboxylative cross-coupling of α-keto acids with alkenes giving approach to chalcones
Wu, Shang,Yu, Hongheng,Hu, Qinzheng,Yang, Quanlu,Xu, Shouwang,Liu, Tian
, p. 4763 - 4765 (2017/12/01)
A silver-catalyzed decarboxylative cross-coupling of α-keto acids with alkenes is reported. The method, with a wide range of substrate tolerance and mild operational conditions, can produce various chalcone derivatives in moderate to high yields from easily available starting materials.
Transition-Metal-Free Synthesis of Homo- and Hetero-1,2,4-Triaryl Benzenes by an Unexpected Base-Promoted Dearylative Pathway
Rehan, Mohammad,Maity, Sanjay,Morya, Lalit Kumar,Pal, Kaushik,Ghorai, Prasanta
supporting information, p. 7728 - 7732 (2016/07/07)
An unprecedented approach for the synthesis of homo- and hetero-1,2,4-triaryl benzenes has been developed using a simple base-mediated reaction of either α-aryl cinnamyl alcohols or α,γ-di-aryl propanones. The salient feature of this strategy involves the sequential hydride transfer, regiospecific condensation, regiospecific dearylation, and aromatization under metal-free reaction conditions. The synthesis of unsymmetrically substituted triphenylenes by oxidative coupling of the synthesized 1,2,4-triaryl benzenes has also been demonstrated.
Copper-catalyzed oxidative coupling of alkenes with aldehydes: Direct access to α,β-unsaturated ketones
Wang, Jing,Liu, Chao,Yuan, Jiwen,Lei, Aiwen
supporting information, p. 2256 - 2259 (2013/04/10)
Let's get radical: The first copper-catalyzed oxidative coupling of alkenes and aldehydes was developed. Various aldehydes were utilized as substrates to construct α,β-unsaturated ketones. A preliminary mechanistic study indicated that this reaction is likely to proceed through a single-electron transfer. Copyright
Development of a general palladium-catalyzed carbonylative heck reaction of aryl halides
Wu, Xiao-Feng,Neumann, Helfried,Spannenberg, Anke,Schulz, Thomas,Jiao, Haijun,Beller, Matthias
supporting information; experimental part, p. 14596 - 14602 (2010/12/24)
The first general palladium-catalyzed carbonylative vinylation of aryl halides with olefins in the presence of CO has been developed. Applying a catalyst system consisting of [(cinnamyl)PdCl]2 and bulky imidazolyl-phosphine ligand L1 allows for the efficient and selective synthesis of α,β-unsaturated ketones under mild reaction conditions. Starting from easily available aryl halides and olefins, versatile building blocks can be prepared in a straightforward manner. The generality and functional group tolerance of this novel protocol is demonstrated.