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Regioselective Functionalization. 6.1 Migratory Preferences in Hydroxylamine-O-sulfonic Acid and Schmidt Rearrangements of 7-Substituted Norcamphors

Autor: Zilun Hu, Osbert H. Cheung, Grant R. Krow, Yoon B. Lee

Publikováno v: The Journal of Organic Chemistry. 61:5574-5580

Hydroxylamine-O-sulfonic acid reacted with syn-7-X- and anti-7-Y-substituted norcamphor derivatives [X = H, OMe, Cl, Br, OTos; Y = H, COOMe, Cl, Br, Tos, COOMe(5-exo-Br)], to give solely bridgehead migrated 2-azalactams, except for minor amounts of m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a3398173e5c509df69f87c0c97c01eb
https://doi.org/10.1021/jo960604e

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ChemInform Abstract: Azatricycles from Substituted Pyridines. Synthesis and Rearrangement of N-Ethoxycarbonyl-2-azatricyclo(4.3.1.03,7)dec-8-enes

Autor: Steven W. Szczepanski, Grant R. Krow, Ramesh Raghavachari, Peter V. Alston, Yoon B. Lee

Publikováno v: ChemInform. 23

The scope and relative rates of intramolecular cycloaddition reactions of methyl-substituted 2-[3-butenyl]-1,2-dihydropyridines 4 have been studied. Cycloadducts 5 can be rearranged to 14 upon reaction with bromine, except when olefinic methyl groups

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c62802c47ba425a666fcc9e9ab85cfa2
https://doi.org/10.1002/chin.199207189

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ChemInform Abstract: Regioselective Functionalization. Part 6. Migratory Preferences in Hydroxylamine-O-sulfonic Acid and Schmidt Rearrangements of 7- Substituted Norcamphors

Autor: Yoon B. Lee, Grant R. Krow, O. H. Cheung, Z. Hu

Publikováno v: ChemInform. 28

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e904262ee4a8bcc40dc440eba8129c7e
https://doi.org/10.1002/chin.199702145

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ChemInform Abstract: A Novel Synthesis of 2-Azabicyclo[2.1.1]hexane from Pyridine

Autor: Walden S. Lester, Donald A. Shaw, Grant R. Krow, Hermona Christian, Yoon B. Lee, Jing Yuan

Publikováno v: ChemInform. 30

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d3aee0eb8654faf9e8e0975fae5bf5c9
https://doi.org/10.1002/chin.199914140

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ChemInform Abstract: 2-Azabicyclo[2.1.1]hexanes. Part 2. Substituent Effects on the Bromine-Mediated Rearrangement of 2-Azabicyclo[2.2.0]hex-5-enes

Autor: Jingqi Duo, Seth B. Herzon, Walden S. Lester, Grant R. Krow, Nian Liu, Yen Nguyen, David E. Zacharias, Yoon B. Lee, Jing Yuan

Publikováno v: ChemInform. 32

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ecd7d2966af4d601023b9aec94364e8
https://doi.org/10.1002/chin.200128094

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Azatricycles from substituted pyridines. Synthesis and rearrangement of N-ethoxycarbonyl-2-azatricyclo[4.3.1.03,7]dec-8-enes

Autor: Ramesh Raghavachari, Peter V. Alston, Yoon B. Lee, Steven W. Szczepanski, Grant R. Krow

Publikováno v: Tetrahedron. 47:8499-8514

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f6021399af94edbaeb5c7dd20d8b2f52
https://doi.org/10.1016/s0040-4020(01)82393-0

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Template-controlled oligomerization support studies. Template synthesis and functionalization

Autor: John S. Bobo, Susan M. Ensel, Paul H. Weinreb, Yoon B. Lee, Ken S. Feldman

Publikováno v: The Journal of Organic Chemistry. 55:474-481

The rigid organic template 8 can be rapidly assembled via double Diels-Alder cycloaddition of methyl 9-anthracenecarboxylate and trans-anti-trans-norbornadiene trimer 5. Subsequent manipulation leads to differentially functionalized templates capable

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::dee5e6e43194767b5de5d85611b89b43
https://doi.org/10.1021/jo00289a019

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A Novel Synthesis of 2-Azabicyclo[2.1.1]hexane from Pyridine

Autor: Walden S. Lester, Donald A. Shaw, Grant R. Krow, Hermona Christian, Jing Yuan, Yoon B. Lee

Publikováno v: The Journal of Organic Chemistry. 63:8558-8560

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a80bf67e0fec80f440a4f33f74e06411
https://doi.org/10.1021/jo9808472

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2-Azabicyclo[2.1.1]hexanes. 2. Substitutent effects on the bromine-mediated rearrangement of 2-azabicyclo[2.2.0]hex-5-enes

Autor: Nian Liu, Seth B. Herzon, David E. Zacharias, Jing Yuan, Yen Nguyen, Yoon B. Lee, Walden S. Lester, Grant R. Krow, Jingqi Duo

Publikováno v: The Journal of organic chemistry. 66(5)

Methyl- and phenyl-substituted N-(ethoxycarbonyl)-2-azabicyclo[2.2.0]hex-5-enes 6 have been prepared by photoirradiation of appropriately substituted 1,2-dihydropyridines. Torquoselectivity is observed in the synthesis of the 3-endo-methyl- and 3-end

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1026a6bd53d3eeabe11bd8fb5a6b1eb6
https://pubmed.ncbi.nlm.nih.gov/11262131

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Diels-alder cycloadditions of diene-substitutedN-ethoxycarbonyl-2-methyl-1,2-dihydropyridines withN-phenylmaleimide

Autor: James T. Carey, Grant R. Krow, Yoon B. Lee, Steven W. Szczepanski, Kevin C. Cannon, Harri G. Ramjit

Publikováno v: Journal of Heterocyclic Chemistry. 22:131-135

The ten possible substitution patterns for N-Ethoxycarbonyl-2-methyl-1,2-dihydropyridines 5 in which one or two olefinic sites are alkyl substituted were synthesized and reacted with N-phenylmaleimide 2 to provide cycloadducts 6. N-Ethoxycarbonyl-5,6

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::faaa6b060d761b4161ed11831332d3bf
https://doi.org/10.1002/jhet.5570220133

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