The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform
Hoseong Lee - One of the best experts on this subject based on the ideXlab platform.
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ruthenium catalyzed direct n formylation of lactams with Paraformaldehyde
ChemInform, 2015Co-Authors: Hoseong Lee, Byungjun Kang, Sang Ick Lee, Soon Hyeok HongAbstract:Lactams are directly converted into N-formylimides catalyzed with Shvo′s catalyst generating hydrogen as the only by-product.
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ruthenium catalyzed direct n formylation of lactams with Paraformaldehyde
Synlett, 2015Co-Authors: Hoseong Lee, Byungjun Kang, Sang Ick Lee, Soon Hyeok HongAbstract:Catalytic N-formylation of lactams was conducted with Paraformaldehyde using Shvo’s catalyst. Various lactams were smoothly converted into N -formylimides without the use of a stoichiometric activating reagent.
Guo-jun Deng - One of the best experts on this subject based on the ideXlab platform.
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lewis acid catalyzed 2 arylquinazoline formation from n arylbenzimidamides and Paraformaldehyde
Green Chemistry, 2016Co-Authors: Xiufang Cheng, Huamin Wang, Fuhong Xiao, Guo-jun DengAbstract:An efficient procedure for the synthesis of 2-arylquinazolines from N′-arylbenzimidamides has been developed under transition-metal-free conditions. In this process, stable and low-toxicity Paraformaldehyde was used as the carbon source. A broad range of functional groups were well tolerated in this reaction system.
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palladium catalyzed Paraformaldehyde insertion a three component synthesis of benzofurans
ChemInform, 2016Co-Authors: Xiufang Cheng, Yi Peng, Guo-jun DengAbstract:2-Aroylbenzofurans are efficiently prepared based on an in situ formylation reaction using cheap and stable Paraformaldehyde as carbon source.
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Palladium-catalyzed Paraformaldehyde insertion: a three-component synthesis of benzofurans.
Organic & biomolecular chemistry, 2016Co-Authors: Xiufang Cheng, Yi Peng, Guo-jun DengAbstract:An efficient procedure for 2-aroylbenzofuran preparation from 2-bromophenols, phenacyl bromides and Paraformaldehyde is described. The cheap and stable Paraformaldehyde served as the carbon source via an in situ formylation reaction.
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palladium catalyzed phthalazinone synthesis using Paraformaldehyde as carbon source
Organic Letters, 2014Co-Authors: Huamin Wang, Jinhui Cai, Huawen Huang, Guo-jun DengAbstract:A palladium-catalyzed one-pot synthesis of phthalazinones from 2-halomethyl benzoates, Paraformaldehyde, and aryl hydrazines is described. Various substituted phthalazinones were selectively obtained in good yields using Paraformaldehyde as the cheap carbon source (CH).
John M Robinson - One of the best experts on this subject based on the ideXlab platform.
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a new method to enhance contrast of ultrathin cryosections for immunoelectron microscopy
Journal of Histochemistry and Cytochemistry, 2003Co-Authors: Toshihiro Takizawa, Clark L Anderson, John M RobinsonAbstract:Adequate contrast of ultrathin cryosections is crucial for evaluating morphological detail to assess immunocytochemical localization at the electron microscopic level. We have developed a positive staining method for achieving contrast in ultrathin cryosections, from tissue fixed only in Paraformaldehyde, that provides excellent contrast at the electron microscopic level.
Soon Hyeok Hong - One of the best experts on this subject based on the ideXlab platform.
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ruthenium catalyzed direct n formylation of lactams with Paraformaldehyde
ChemInform, 2015Co-Authors: Hoseong Lee, Byungjun Kang, Sang Ick Lee, Soon Hyeok HongAbstract:Lactams are directly converted into N-formylimides catalyzed with Shvo′s catalyst generating hydrogen as the only by-product.
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ruthenium catalyzed direct n formylation of lactams with Paraformaldehyde
Synlett, 2015Co-Authors: Hoseong Lee, Byungjun Kang, Sang Ick Lee, Soon Hyeok HongAbstract:Catalytic N-formylation of lactams was conducted with Paraformaldehyde using Shvo’s catalyst. Various lactams were smoothly converted into N -formylimides without the use of a stoichiometric activating reagent.
Aida Luz Villa - One of the best experts on this subject based on the ideXlab platform.
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oxyfunctionalization of turpentine for fuel applications
Energy & Fuels, 2020Co-Authors: Duban Garcia, Felipe Bustamante, Aida Luz Villa, Magin Lapuerta, Edwin AlarconAbstract:β-Pinene and Paraformaldehyde can be activated over catalyst to preferentially produce nopol. Tin supported over MCM-41 has shown high activity in this reaction, achieving complete conversion of pu...
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kinetics of depolymerization of Paraformaldehyde obtained by thermogravimetric analysis
Thermochimica Acta, 2015Co-Authors: Edwing Grajales, Edwin Alarcon, Aida Luz VillaAbstract:Abstract Solid Paraformaldehyde is a source of formaldehyde that is preferred when anhydrous conditions in chemical processes are required. In this contribution, several depolymerization models were proposed for Paraformaldehyde in powder (PFP) and prills (PFS), and they were validated with experimental thermogravimetric analysis (TGA). For description of PFP depolymerization, a model of a single step was adequate, and for PFS the best model included two simultaneous mechanisms. Kinetic models were determined using Master Plot method; for PFS, small intervals of conversion were used in order to obtain the best model at each finite point of the progress of reaction. Apparent activation energies ( E a ) were obtained by isoconversional methods. For PFP, E a was 31.7 kJ mol −1 and the model corresponded to Avrami-Erofeyev 2 (A2). For PFS decomposition, the activation energy of the two mechanisms was E a = 105.4 kJ mol −1 for a contracting volume (R3) model and E a = 48.4 kJ mol −1 for the Avrami-Erofeyev model.
