The Experts below are selected from a list of 672 Experts worldwide ranked by ideXlab platform
Hiejoon Kim - One of the best experts on this subject based on the ideXlab platform.
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electrospray ionization mass spectrometric observation of oligomers in paal knorr Synthesis of 2 5 dimethyl 1 phenylpyrrole
Bulletin of The Korean Chemical Society, 2005Co-Authors: So Young Park, Manseog Chun, Jinsu Song, Hiejoon KimAbstract:Electrospray ionization mass spectrometry (ESI MS) was used, along with gas chromatography-massspectrometry (GC-MS), to monitor Paal-Knorr Synthesis of 2,5-dimethyl-1-phenylpyrrole by condensation ofaniline with 2,5-hexanedione. In addition to 2,5-dimethyl-1-phenylpyrrole observed as a single spot by TLC,unexpected dimer size compounds were observed by GC-MS. Dimers and trimers were observed by ESI MS.ESI tandem mass spectrometry was used to select plausible structures for the dimer. ESI MS with or withoutliquid chromatographic separation is useful for observing oligomeric byproducts with low volatility producedin organic reactions.
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Electrospray Ionization Mass Spectrometric Observation of Oligomers in Paal-Knorr Synthesis of 2,5-Dimethyl-1-phenylpyrrole
2004Co-Authors: So Young Park, Manseog Chun, Jinsu Song, Hiejoon KimAbstract:Electrospray ionization mass spectrometry (ESI MS) was used, along with gas chromatography-mass spectrometry (GC-MS), to monitor Paal-Knorr Synthesis of 2,5-dimethyl-1-phenylpyrrole by condensation of aniline with 2,5-hexanedione. In addition to 2,5-dimethyl-1-phenylpyrrole observed as a single spot by TLC, unexpected dimer size compounds were observed by GC-MS. Dimers and trimers were observed by ESI MS. ESI tandem mass spectrometry was used to select plausible structures for the dimer. ESI MS with or without liquid chromatographic separation is useful for observing oligomeric byproducts with low volatility produced in organic reactions. Key Words: ESI MS, GC-MS, Paal-Knorr Synthesis, 2,5-Dimethyl-1-phenylpyrrole, Oligome
So Young Park - One of the best experts on this subject based on the ideXlab platform.
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electrospray ionization mass spectrometric observation of oligomers in paal knorr Synthesis of 2 5 dimethyl 1 phenylpyrrole
Bulletin of The Korean Chemical Society, 2005Co-Authors: So Young Park, Manseog Chun, Jinsu Song, Hiejoon KimAbstract:Electrospray ionization mass spectrometry (ESI MS) was used, along with gas chromatography-massspectrometry (GC-MS), to monitor Paal-Knorr Synthesis of 2,5-dimethyl-1-phenylpyrrole by condensation ofaniline with 2,5-hexanedione. In addition to 2,5-dimethyl-1-phenylpyrrole observed as a single spot by TLC,unexpected dimer size compounds were observed by GC-MS. Dimers and trimers were observed by ESI MS.ESI tandem mass spectrometry was used to select plausible structures for the dimer. ESI MS with or withoutliquid chromatographic separation is useful for observing oligomeric byproducts with low volatility producedin organic reactions.
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Electrospray Ionization Mass Spectrometric Observation of Oligomers in Paal-Knorr Synthesis of 2,5-Dimethyl-1-phenylpyrrole
2004Co-Authors: So Young Park, Manseog Chun, Jinsu Song, Hiejoon KimAbstract:Electrospray ionization mass spectrometry (ESI MS) was used, along with gas chromatography-mass spectrometry (GC-MS), to monitor Paal-Knorr Synthesis of 2,5-dimethyl-1-phenylpyrrole by condensation of aniline with 2,5-hexanedione. In addition to 2,5-dimethyl-1-phenylpyrrole observed as a single spot by TLC, unexpected dimer size compounds were observed by GC-MS. Dimers and trimers were observed by ESI MS. ESI tandem mass spectrometry was used to select plausible structures for the dimer. ESI MS with or without liquid chromatographic separation is useful for observing oligomeric byproducts with low volatility produced in organic reactions. Key Words: ESI MS, GC-MS, Paal-Knorr Synthesis, 2,5-Dimethyl-1-phenylpyrrole, Oligome
Manseog Chun - One of the best experts on this subject based on the ideXlab platform.
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electrospray ionization mass spectrometric observation of oligomers in paal knorr Synthesis of 2 5 dimethyl 1 phenylpyrrole
Bulletin of The Korean Chemical Society, 2005Co-Authors: So Young Park, Manseog Chun, Jinsu Song, Hiejoon KimAbstract:Electrospray ionization mass spectrometry (ESI MS) was used, along with gas chromatography-massspectrometry (GC-MS), to monitor Paal-Knorr Synthesis of 2,5-dimethyl-1-phenylpyrrole by condensation ofaniline with 2,5-hexanedione. In addition to 2,5-dimethyl-1-phenylpyrrole observed as a single spot by TLC,unexpected dimer size compounds were observed by GC-MS. Dimers and trimers were observed by ESI MS.ESI tandem mass spectrometry was used to select plausible structures for the dimer. ESI MS with or withoutliquid chromatographic separation is useful for observing oligomeric byproducts with low volatility producedin organic reactions.
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Electrospray Ionization Mass Spectrometric Observation of Oligomers in Paal-Knorr Synthesis of 2,5-Dimethyl-1-phenylpyrrole
2004Co-Authors: So Young Park, Manseog Chun, Jinsu Song, Hiejoon KimAbstract:Electrospray ionization mass spectrometry (ESI MS) was used, along with gas chromatography-mass spectrometry (GC-MS), to monitor Paal-Knorr Synthesis of 2,5-dimethyl-1-phenylpyrrole by condensation of aniline with 2,5-hexanedione. In addition to 2,5-dimethyl-1-phenylpyrrole observed as a single spot by TLC, unexpected dimer size compounds were observed by GC-MS. Dimers and trimers were observed by ESI MS. ESI tandem mass spectrometry was used to select plausible structures for the dimer. ESI MS with or without liquid chromatographic separation is useful for observing oligomeric byproducts with low volatility produced in organic reactions. Key Words: ESI MS, GC-MS, Paal-Knorr Synthesis, 2,5-Dimethyl-1-phenylpyrrole, Oligome
Jinsu Song - One of the best experts on this subject based on the ideXlab platform.
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electrospray ionization mass spectrometric observation of oligomers in paal knorr Synthesis of 2 5 dimethyl 1 phenylpyrrole
Bulletin of The Korean Chemical Society, 2005Co-Authors: So Young Park, Manseog Chun, Jinsu Song, Hiejoon KimAbstract:Electrospray ionization mass spectrometry (ESI MS) was used, along with gas chromatography-massspectrometry (GC-MS), to monitor Paal-Knorr Synthesis of 2,5-dimethyl-1-phenylpyrrole by condensation ofaniline with 2,5-hexanedione. In addition to 2,5-dimethyl-1-phenylpyrrole observed as a single spot by TLC,unexpected dimer size compounds were observed by GC-MS. Dimers and trimers were observed by ESI MS.ESI tandem mass spectrometry was used to select plausible structures for the dimer. ESI MS with or withoutliquid chromatographic separation is useful for observing oligomeric byproducts with low volatility producedin organic reactions.
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Electrospray Ionization Mass Spectrometric Observation of Oligomers in Paal-Knorr Synthesis of 2,5-Dimethyl-1-phenylpyrrole
2004Co-Authors: So Young Park, Manseog Chun, Jinsu Song, Hiejoon KimAbstract:Electrospray ionization mass spectrometry (ESI MS) was used, along with gas chromatography-mass spectrometry (GC-MS), to monitor Paal-Knorr Synthesis of 2,5-dimethyl-1-phenylpyrrole by condensation of aniline with 2,5-hexanedione. In addition to 2,5-dimethyl-1-phenylpyrrole observed as a single spot by TLC, unexpected dimer size compounds were observed by GC-MS. Dimers and trimers were observed by ESI MS. ESI tandem mass spectrometry was used to select plausible structures for the dimer. ESI MS with or without liquid chromatographic separation is useful for observing oligomeric byproducts with low volatility produced in organic reactions. Key Words: ESI MS, GC-MS, Paal-Knorr Synthesis, 2,5-Dimethyl-1-phenylpyrrole, Oligome
Xingxian Zhang - One of the best experts on this subject based on the ideXlab platform.
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a highly efficient paal knorr Synthesis of chiral pyrrole derivatives catalyzed by mgi2
Chinese Journal of Organic Chemistry, 2016Co-Authors: Pengcheng Li, Guodong Weng, Yongdong Zhang, Xingxian ZhangAbstract:A novel methodology has been developed for the Synthesis of N-substituted mono-pyrrole and bis-pyrrole derivatives with a chiral substituent at the nitrogen atom by MgI2-catalyzed Paal-Knorr condensation using esters of amino acids as the source of chirality. This method has some advantages such as mild reaction conditions, simple procedure, good yields, high stereoselectivity and environmental friendliness.
