- Nickel-Catalyzed Chemoselective Acetalization of Aldehydes With Alcohols under Neutral Conditions
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A molecularly defined NiII-complex catalyzing the chemoselective acetalization of aldehydes with alcohols under neutral conditions is reported. The reaction is general, efficient and showed a wide substrate scope (including aliphatic aldehydes) as well as excellent functional group tolerance. Reusability of the present nickel catalyst is also demonstrated.
- Subaramanian, Murugan,Landge, Vinod G.,Mondal, Akash,Gupta, Virendrakumar,Balaraman, Ekambaram
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supporting information
p. 4557 - 4562
(2019/08/30)
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- Visible-light-induced acetalization of aldehydes with alcohols
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In this work, we have achieved a simple and general method for acetalization of aldehydes by means of a photochemical reaction under low-energy visible light irradiation. A broad range of aromatic, heteroaromatic, and aliphatic aldehydes have been protected under neutral conditions in good to excellent yields using a catalytic amount of Eosin Y as the photocatalyst. Our visible light mediated acetalization strategies are successful for more challenging acid-sensitive aldehydes and sterically hindered aldehydes. Notably, this protocol is chemoselective to aldehydes, while ketones remain intact.
- Yi, Hong,Niu, Linbin,Wang, Shengchun,Liu, Tianyi,Singh, Atul K.,Lei, Aiwen
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supporting information
p. 122 - 125
(2017/11/27)
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- Palladium-Catalyzed ipso-Borylation of Aryl Sulfides with Diborons
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A catalytic Miyaura-type ipso-borylation of aryl sulfides with diboron reagents has been achieved, providing arylboronate esters of synthetic use. The key conditions to transform inherently reluctant C-S bonds into C-B bonds include a palladium-NHC (N-heterocyclic carbene) precatalyst, bis(pinacolato)diboron, and lithium hexamethyldisilazide. This protocol is applicable to a reasonable range of aryl alkyl sulfides. Twofold borylation was observed in the reaction of diphenyl sulfide.
- Bhanuchandra,Baralle, Alexandre,Otsuka, Shinya,Nogi, Keisuke,Yorimitsu, Hideki,Osuka, Atsuhiro
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supporting information
p. 2966 - 2969
(2016/07/06)
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- NEW BENZOFURAN AND BENZOTHIOPHENE DERIVATIVES AS ANTI-INFLAMMATORY AGENTS
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This invention relates to compounds, which are generally anti-inflammatory and analgesic compounds, and which are represented by Formula I: wherein A is a —CH2—, —C(O)—, —O—, —S—, —S(O)—, or —S(0)2— and the other substituents are as defined in the specification; or prodrugs, individual isomers, mixtures of isomers, and pharmaceutically acceptable salts thereof. The invention further relates to pharmaceutical compositions containing such compounds and methods for their use as therapeutic agents.
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- BENZENESULFONAMIDE DERIVATIVES
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A novel benzenesulfonamide derivative represented by the formula has an inhibitory activity against phospholipase A2, so that it is effective in the treatment of diseases for which such an activity is efficacious
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