The Hydroamination of Unactivated Alkenes with Sulfonamides Catalyzed by Phosphomolybdic Acid/SiO2

Yadav, J. S.; Reddy, B. V. Subba; Raju, Atla; Kontham, Ravindar; Narender, R.

doi:10.2174/157017808786857471

Cited by 10 publications

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“…[34][35][36] HPAs or metal ion exchanged HPAs have also been used as catalysts for the intermolecular HA of olefin. [37][38][39][40][41] As previously mentioned, the use of HPAs for this reaction without proper support significantly reduces the life of the catalysts and thereby their recyclability.…”

Section: Introductionmentioning

confidence: 95%

Titania Nanoparticles Stabilized HPA in SBA‐15 for the Intermolecular Hydroamination of Activated Olefins

et al. 2014

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A template‐free approach based on the use of eutectic mixtures composed of 2‐hydroxymethylthiophene and furfuryl alcohol has been designed for the preparation of hierarchical sulfur‐doped carbons (SPCs) in monolithic form. The temperature used for carbonization, for example, 600, 800, or 900 °C, determined most of the physicochemical properties of the resulting SPCs. Thus, the surface area increased from below 400 to up 775 m2 g−1, along with the carbonization temperature, whereas the sulfur content decreased from approximately 15 to 5 wt %. The oxygen reduction reaction performance in samples carbonized at 900 °C was good, with the four‐electron‐transfer reaction prevailing over the two‐electron‐transfer one. Interestingly, the methanol tolerance and stability of these SPCs were also remarkable, with less than 5 % current decrease immediately after methanol addition, whereas, in terms of stability, the current decrease was below 8 % after 20000 s. This performance was in the range of that found not only for other SPCs, but also for many nitrogen‐doped and even some dual‐doped (S and N) ones.

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Section: Introductionmentioning

confidence: 95%

Titania Nanoparticles Stabilized HPA in SBA‐15 for the Intermolecular Hydroamination of Activated Olefins

et al. 2014

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“…This methodology corresponding to the hydro-amination reactions of alkenes afforded open-chain alkene-sulfonamide adducts with high regioselectivity (Scheme 1e). [47][48][49] An I 2 -catalyzed strategy was utilized for a three-component seleno-amination of alkenes by Liu et al, which provides β-sulfonamidoselenide products via regioselective additions of sulfonamides and symmetrical alkylselenium groups to the alkenes (Scheme 1f ). 50 To the best of our knowledge, there are no three-component carbo-sulfonamidation reactions of alkenes that enable access to diverse structures of sulfonamides.…”

Section: Introductionmentioning

confidence: 99%

Efficient and environmentally-friendly access to 4,5-unsaturated sulfonamides through ligand-free copper-BF₃-catalyzed three-component alkene carbo-sulfonamidation

2023

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“…Several Brønsted acids, such as triflic acid,2 PhNH 3 B(C 6 F 5 ) 4 ,3 proton‐exchange montmorillonite,4 silicotungstic acid,5 phosphomolybdic acid supported on silica gel6 and SO 3 H‐functionalized ionic liquids7 have been used for the intermolecular hydroamination of olefins and conjugated dienes. Iodine8 and N ‐bromosuccinimide9 have been recently employed for the addition of sulfonamides8, 9 and carbamates9 to vinylarenes.…”

Section: Introductionmentioning

confidence: 99%

Three Polymorphic Cd^II Coordination Polymers Obtained from the Solution and Mechanochemical Reactions of 3‐Cyanopentane‐2,4‐dione with Cd^II Acetate

Yoshida

Nishikiori

Kuroda

et al. 2013

Chemistry A European J

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We previously reported that monomeric and polymeric metal complexes are obtained from solution and mechanochemical reactions of 3-cyano-pentane-2,4-dione (CNacacH) with 3d metal acetates (M = Mn(II), Fe(II), Co(II), Ni(II), Cu(II), and Zn(II)). A common feature found in all complexes was that their structural base is trans-[M(CNacac)(2)]. Here, we report that the reactions of CNacacH with Cd(II) acetate in the solution and solid states afford different coordination polymers composed of trans-[Cd(CNacac)(2)] and cis-[Cd(CNacac)(2)] units, respectively. From a methanol solution containing CNacacH (L) and Cd(OAc)(2)⋅2 H(2)O (M), a coordination polymer (Cd-1) in which trans-[Cd(CNacac)(2)] units are three-dimensionally linked was obtained. In contrast, two different coordination polymers, Cd-2 and Cd-3, were obtained from mechanochemical reactions of CNacacH with Cd(OAc)(2)⋅2 H(2)O at M/L ratios of 1:1 and 1:2, respectively. In Cd-2, cis-[Cd(CNacac)(2)] units are two-dimensionally linked, whereas the units are linked three-dimensionally in Cd-3. Furthermore, Cd-1 and Cd-2 converted to Cd-3 by applying an annealing treatment and grinding with a small amount of liquid, respectively, in spite of the polymeric structures. These phenomena, 1) different structures are formed from solution and mechanochemical reactions, 2) two polymorphs are formed depending on the M/L ratio, and 3) structural transformation of resulting polymeric structures, indicate the usability of mechanochemical method in the syntheses of coordination polymers as well as the peculiar structural flexibility of cadmium-CNacac polymers.

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The Hydroamination of Unactivated Alkenes with Sulfonamides Catalyzed by Phosphomolybdic Acid/SiO2

Cited by 10 publications

References 0 publications

Titania Nanoparticles Stabilized HPA in SBA‐15 for the Intermolecular Hydroamination of Activated Olefins

Titania Nanoparticles Stabilized HPA in SBA‐15 for the Intermolecular Hydroamination of Activated Olefins

Efficient and environmentally-friendly access to 4,5-unsaturated sulfonamides through ligand-free copper-BF₃-catalyzed three-component alkene carbo-sulfonamidation

Three Polymorphic Cd^II Coordination Polymers Obtained from the Solution and Mechanochemical Reactions of 3‐Cyanopentane‐2,4‐dione with Cd^II Acetate

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The Hydroamination of Unactivated Alkenes with Sulfonamides Catalyzed by Phosphomolybdic Acid/SiO2

Cited by 10 publications

References 0 publications

Titania Nanoparticles Stabilized HPA in SBA‐15 for the Intermolecular Hydroamination of Activated Olefins

Titania Nanoparticles Stabilized HPA in SBA‐15 for the Intermolecular Hydroamination of Activated Olefins

Efficient and environmentally-friendly access to 4,5-unsaturated sulfonamides through ligand-free copper-BF3-catalyzed three-component alkene carbo-sulfonamidation

Three Polymorphic CdII Coordination Polymers Obtained from the Solution and Mechanochemical Reactions of 3‐Cyanopentane‐2,4‐dione with CdII Acetate

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Efficient and environmentally-friendly access to 4,5-unsaturated sulfonamides through ligand-free copper-BF₃-catalyzed three-component alkene carbo-sulfonamidation

Three Polymorphic Cd^II Coordination Polymers Obtained from the Solution and Mechanochemical Reactions of 3‐Cyanopentane‐2,4‐dione with Cd^II Acetate