Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Petra, Böhrer"'
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 12, Iss 1, Pp 1178-1184 (2016)
Do not rely on the widely accepted rule that vicinal, sp3-positioned protons in cyclopentene moieties should always have more positive 3J NMR coupling constants for the cis than for the trans arrangement: Unrecognized exceptions might misguide one to
Externí odkaz:
https://doaj.org/article/f701ebd142ce47699b6610483c043323
Autor:
Jakob Ruhdorfer, Claudia Behringer, Ernst Lattke, Ulrich von Roman, Petra Böhrer, Rudolf Knorr
Publikováno v:
Chemistry - A European Journal. 23:12861-12869
A "conducted tour" migration keeps a mobile client on a profitable route even though an occasional side-step may seem attractive. A stereochemical manifestation of such a migration had been suggested by Donald J. Cram (1964), and we present now a dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6fed9b64ca62ee335bd2de33869a28f
https://doi.org/10.1002/chem.201702353
https://doi.org/10.1002/chem.201702353
Publikováno v:
The Journal of Organic Chemistry. 82:2843-2854
Kinetic studies are a suitable tool to disclose the role of tiny reagent fractions. The title compound 2 reacted in a kinetic reaction order of 0.5 (square root of its concentration) with an excess of the electrophiles ClSiMe3, 1-bromobutane (n-BuBr)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bc2ed9734da2d21c75905fcdd28304f8
https://doi.org/10.1021/acs.joc.6b02686
https://doi.org/10.1021/acs.joc.6b02686
Publikováno v:
Journal of Organometallic Chemistry. 824:61-72
The energetically stabilizing delocalization of negative electric charge from the Li-C(alpha) bond into the aryl pi system of alpha-arylvinyllithiums, Ar-C(Li)=CH2, is most efficient with an orthogonal relationship of the aryl ring plane and the C=C
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3f327e3cefe0e945e26769c6b6ed776
https://doi.org/10.1016/j.jorganchem.2016.09.029
https://doi.org/10.1016/j.jorganchem.2016.09.029
Publikováno v:
Helvetica Chimica Acta. 102
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98192a9d089f533df10d1656824ef0c8
https://doi.org/10.1002/hlca.201800231
https://doi.org/10.1002/hlca.201800231
Publikováno v:
Beilstein Journal of Organic Chemistry, Vol 12, Iss 1, Pp 1178-1184 (2016)
Beilstein Journal of Organic Chemistry
Beilstein Journal of Organic Chemistry
Do not rely on the widely accepted rule that vicinal, sp3-positioned protons in cyclopentene moieties should always have more positive 3J NMR coupling constants for the cis than for the trans arrangement: Unrecognized exceptions might misguide one to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2eadc749fe3f2ea8e7b8343906375f04
https://doaj.org/article/f701ebd142ce47699b6610483c043323
https://doaj.org/article/f701ebd142ce47699b6610483c043323
Publikováno v:
Organometallics. 34:1038-1045
The title compound is entirely monomeric in THF as the solvent, but its two ortho-diisopropyl substituents (in contrast to two tert-butyl groups) do not suffice to prevent its dimerization in Et2O: At −107 °C, the disolvated dimer (43% of the tota
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a34fac1cbc493c5780cb8989b196d673
https://doi.org/10.1021/om5010995
https://doi.org/10.1021/om5010995
Autor:
Rudolf, Knorr, Claudia, Behringer, Jakob, Ruhdorfer, Ulrich, von Roman, Ernst, Lattke, Petra, Böhrer
Publikováno v:
Chemistry (Weinheim an der Bergstrasse, Germany). 23(52)
A "conducted tour" migration keeps a mobile client on a profitable route even though an occasional side-step may seem attractive. A stereochemical manifestation of such a migration had been suggested by Donald J. Cram (1964), and we present now a dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::2dd3d819c400d012d655fbf80af9d861
https://pubmed.ncbi.nlm.nih.gov/28682463
https://pubmed.ncbi.nlm.nih.gov/28682463
Publikováno v:
Journal of Organometallic Chemistry. 767:125-135
A THF-solvated, crystalline, exocyclic alkenyllithium, (tert-alkyl)2C C(Li)–Ph, was synthesized and shown to be a disolvated dimer in the solid state and in toluene as the solvent; increasing amounts of the monomeric species emerged on cooling the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd43dab44831ae673e93441e25d9722a
https://doi.org/10.1016/j.jorganchem.2014.05.031
https://doi.org/10.1016/j.jorganchem.2014.05.031
Publikováno v:
Tetrahedron. 70:5332-5338
Hydrophobically shielded alkynes HC C–aryl, carrying 2,6-di- and 2,4,6-tri-tert-butylphenyl as the aryl group, can add aqueous HBr on heating in moist chloroform solutions to produce pure H2C C(–Br)–aryl (isolated yields 96%, no hydrolysis). Em
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56849d0e81e64405f70331eaf3fea4fb
https://doi.org/10.1016/j.tet.2014.05.002
https://doi.org/10.1016/j.tet.2014.05.002