Zobrazeno 1 - 10 of 119 pro vyhledávání: '"Helmut, Vorbrüggen"'
1
Truncated (N)-Methanocarba Nucleosides as Partial Agonists at Mouse and Human A
Autor: Dilip K, Tosh, Veronica, Salmaso, Harsha, Rao, Amelia, Bitant, Courtney L, Fisher, David I, Lieberman, Helmut, Vorbrüggen, Marc L, Reitman, Oksana, Gavrilova, Zhan-Guo, Gao, John A, Auchampach, Kenneth A, Jacobson
Publikováno v: J Med Chem
Dopamine-derived N(6)-substituents, compared to N(6)-(2-phenylethyl), in truncated (N)-methanocarba (bicyclo[3.1.0]hexyl) adenosines favored high A(3) adenosine receptor (AR) affinity/selectivity, e.g. C2-phenylethynyl analogue 15 (MRS7591, K(i) 10.9
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::39ab3dda627bedc9c650d51ef492d63a
https://pubmed.ncbi.nlm.nih.gov/32271569
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4
The Reaction of Perfluorobutanesulfonyl Fluoride with Alcohols in the Presence of 4-Dialkylaminopyridines
Autor: Helmut Vorbrüggen, Konrad Krolikiewicz, B. Bennua‐Skalmowski
Publikováno v: Bulletin des Sociétés Chimiques Belges. 103:453-461
Primary hydroxy groups as in neopentyl alcohol 7 or neopentylglycol 18 react readily with perfluorobutanesulfonyl fluoride 1 in the presence of 2 equiv. of the nucleophilic 4-dialkylaminopyridines 4 to afford high yields of the corresponding N-alkyl-
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e09132efa683b9102dac86c516b3170e
https://doi.org/10.1002/bscb.19941030720
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5
Synthesis, crystal and molecular structure of alkali metal nonaflates
Autor: Helmut Vorbrüggen, Dieter Lentz, Irene Brüdgam
Publikováno v: CrystEngComm. 12:795-800
A solution of potassium nonaflate (n-C4F9SO3K = NfOK) in boiling acetonitrile forms, on subsequent cooling, a stable crystalline 1 : 1 supramolecular complex. The structures of NfOK and NfOK·CH3CN were elucidated by single-crystal X-ray structure de
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bec45e47123ff488e7b0286c533e7498
https://doi.org/10.1039/b916157k
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6
Esterification of Carboxylic Acids and Etherification of Phenols with Amide Acetals
Autor: Helmut Vorbrüggen
Publikováno v: Synlett. 2008:1603-1617
The esterification and etherification of unhindered, as well as severely hindered, carboxylic acids and phenols with basic amide acetals, such as N, N-dimethylformamide dimethyl acetal, and their side reactions are discussed. Modified procedures are
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d26b88e81e4365b9984c8c96e440e5d
https://doi.org/10.1055/s-2008-1077882
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7
The Conversion of Primary or Secondary Alcohols with Nonaflyl Fluoride into Their Corresponding Inverted Fluorides
Autor: Helmut Vorbrüggen
Publikováno v: Synthesis. 2008:1165-1174
The present review covers new efficient conversions (fluorodehydroxylations) of aliphatic primary or secondary hydroxy groups with nonaflyl fluoride ( N-C 4 F 9 SO 2 F; NfF) and bases such as 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), diethylamine, tr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::82c5d40eeb7f1975ef918865b582de7e
https://doi.org/10.1055/s-2008-1067006
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8
Amine-Induced Decomposition of Perfluoroalkanesulfonyl Fluorides
Autor: Helmut Vorbrüggen, Ulrich Klar, B. Bennua‐Skalmowski
Publikováno v: Synthesis. 2008:1175-1178
Perfluoroalkanesulfonyl fluorides (C n F 2n+1 SO 2 F) decompose slowly even at -20 °C in the presence of tertiary heteroaromatic or aliphatic amines to form the corresponding perfluorinated alkanes (C n F 2n+2 ) and amine-sulfur dioxide adducts.
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f352d801c0e28062a44fdf3c2adc7069
https://doi.org/10.1055/s-2008-1067007
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