Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Raymond Le Goaller"'
Autor:
Raymond Le Goaller, Jean-Louis Pierre
Publikováno v:
Canadian Journal of Chemistry. 55:757-765
Two methods are described for the preparation of substituted cyclopropanediols: reduction of β-diketones, and bridging of 1,2-bissiloxyalkenes; a number of the latter compounds were prepared by a new method. [Journal translation]
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fde1a70fc0108094b6ed46a31eb0a131
https://doi.org/10.1139/v77-105
https://doi.org/10.1139/v77-105
Publikováno v:
Journal of the American Chemical Society. 106:1694-1698
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67ecb40a3552969b62d6579a8a8e2200
https://doi.org/10.1021/ja00318a023
https://doi.org/10.1021/ja00318a023
Publikováno v:
Canadian Journal of Chemistry. 67:104-108
Iodine nitrate or bromine nitrate in acetonitrile or in chloroform react with a variety of phenolic substrates to form both halogenated and nitrated products. In the presence of strong complexing agents of halonium ions, no reaction occurs, while in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee4df911e90909f0c8bb2e1ca06ace1d
https://doi.org/10.1139/v89-018
https://doi.org/10.1139/v89-018
Autor:
Jean-Louis Pierre, Raymond Le Goaller
Publikováno v:
Canadian Journal of Chemistry. 56:481-486
The chemical behaviour of 1,2-bis(trimethylsiloxy)cyclopropanes is described. Acid and base solvolyses as well as reactions with chlorine and bromine occur with opening of the ring leading to α-ketols, enones and β-diketones. Ketols and enones aris
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4e1b420bb5e0944e9f03c635d19a260
https://doi.org/10.1139/v78-077
https://doi.org/10.1139/v78-077
Publikováno v:
Electrochimica Acta. 27:257-261
In presence of cryptands ([2.2.2], [2.2.1] and [2.1.1]) halogens X2(bromide and iodine) give rise to the formation of an halonium ion complex in chloroformic solution. Preliminary voltammetric studies of halide and halogen alone allow to measure the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12ab41e45651f71c479d55cd4380535a
https://doi.org/10.1016/0013-4686(82)80012-1
https://doi.org/10.1016/0013-4686(82)80012-1
Publikováno v:
Canadian Journal of Chemistry. 60:1933-1941
Ethoxy-alkenes act as excellent carbene acceptors in the methylmonohalogenocyclopropanation reaction mediated by 1,1-dichloroethane and iodide-ion free methyl iodide. As well as chlorinated adducts, a large proportion of brominated products are obtai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::51ef13a0358acd70a4ea150dd9d4dd51
https://doi.org/10.1139/v82-271
https://doi.org/10.1139/v82-271
Publikováno v:
Tetrahedron Letters. 25:2223-2226
The diprotonated cryptand ∣2.2.2 H 2 ∣ 2+ is formed by the addition in nitromethane 1 of two equivalent of trifluoroacetic acid (or hydroiodic acid) to the cryptate ∣2.2.2 I∣ + , I − ; the reaction is accompanied by the release of molecular
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09b9e4effd158603e92d5affdfaf30a3
https://doi.org/10.1016/s0040-4039(01)80216-1
https://doi.org/10.1016/s0040-4039(01)80216-1
Publikováno v:
Journal de Chimie Physique. 78:421-425
L'etude du systeme l2— Et3 N dans le chloroforme est effectuee par resonance magnetique nucleaire, conductimetrie, spectroscopie dans l'ultra-violet et voltamperometrie. Les donnees experimentales mettent en evidence un complexe ionique de stœchio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::841341f4502b860f2a3e1a2be6fc875c
https://doi.org/10.1051/jcp/1981780421
https://doi.org/10.1051/jcp/1981780421
Publikováno v:
Canadian Journal of Chemistry. 59:621-628
Weakly nucleophilic acceptors such as enol ethers can facilitate cycloaddition reactions with monohalocarbenoids. The high yields and stereoselection towards the more highly hindered adducts are interpreted by complexation of the oxygen atom of the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15d226f0093d2157ff7b49e3e46f42aa
https://doi.org/10.1139/v81-090
https://doi.org/10.1139/v81-090
Publikováno v:
Organic Magnetic Resonance. 1:337-340
La configuration meso ou threo de molecules diastereoisomeres est determinee a partir des spectres RMN respectifs xde chaque isomere. Les relations de symetrie (Raban et Mislow), qui existent entre protons ou groupes de ces molecules sont differentes
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::488ac6deb1cc52f65c9731dd4daef8b8
https://doi.org/10.1002/mrc.1270010408
https://doi.org/10.1002/mrc.1270010408