Zobrazeno 1 - 10
of 42
pro vyhledávání: '"Yuval Halpern"'
Autor:
David Meidar, Yuval Halpern
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 26:590-594
A process1 for the synthesis of ortho-bromo aromatic compounds was studied. The process is based on the blocking and shielding effect of a tertiary butyl group which is introduced on to the aromatic ring prior to bromination. The removal of the terti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b4df28e185fbfbd2158abe9ae2cee03e
https://doi.org/10.1002/jctb.5020260183
https://doi.org/10.1002/jctb.5020260183
Autor:
Yuval Halpern, Nissim Garti
Publikováno v:
Journal of Applied Chemistry and Biotechnology. 25:249-258
A process for the preparation of disubstituted organomercurials was studied. The reaction is summarised by the following equation: where Ar = aryl and × = different anions. Instead of ammonia and EDTA other amines and chelating agents were also used
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::edfcfc32ed0f9d47aa39e8c2b71d7408
https://doi.org/10.1002/jctb.5020250403
https://doi.org/10.1002/jctb.5020250403
Publikováno v:
The Journal of Physical Chemistry A. 106:7304-7309
The kinetics of methane hydrate formation was investigated by in-situ time-of-flight neutron powder diffraction. Samples were prepared from deuterated ice particles (< 0.25 mm) and transformed to clathrate hydrate by pressurizing the system with meth
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::950df688b0730e3ad2b32576c42d8b29
https://doi.org/10.1021/jp025550t
https://doi.org/10.1021/jp025550t
Publikováno v:
The Journal of Physical Chemistry A. 104:5066-5071
The formation of CO2 clathrate hydrate was investigated by using time-of-flight neutron powder diffraction at temperatures ranging from 230 to 290 K with a CO2 gas pressure of 900 psi. CO2 clathrate hydrate was prepared in situ from deuterated ice cr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f38e58153d7d8590000fa55c9a453e7
https://doi.org/10.1021/jp0001642
https://doi.org/10.1021/jp0001642
Publikováno v:
Across Conventional Lines: Selected Papers of George A OlahVolume 1
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::013413b8e55ac65fa97b530e807356c1
https://doi.org/10.1142/9789812791405_0122
https://doi.org/10.1142/9789812791405_0122
Publikováno v:
Journal of the American Chemical Society. 123(51)
We report the in situ observation from diffraction data of the conversion of a gas hydrate with the structure II (sII) lattice to one with the structure I (sI) lattice. Initially, the in situ formation, dissociation, and reactivity of argon gas clath
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d094e2b8a65b458aa657abc07e901e6a
https://pubmed.ncbi.nlm.nih.gov/11749540
https://pubmed.ncbi.nlm.nih.gov/11749540
Autor:
Yuval Halpern
Publikováno v:
Israel Journal of Chemistry. 13:99-105
Isoalkanes are brominated by Br2 in liquid SO2 in the presence of catalytic amounts of super acids (SbF3 or SbF5 – HSO3F (1:1 molar ratio – “Magic Acid”)) to yield mono, di and tri bromoalkanes. A possible mechanism is discussed.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::23de38a05f76248741c05b87eee6a5f8
https://doi.org/10.1002/ijch.197500015
https://doi.org/10.1002/ijch.197500015
Publikováno v:
Journal of the American Chemical Society. 97:6807-6810
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa1e88f6b0dfef3e703b70b9898c3d75
https://doi.org/10.1021/ja00856a034
https://doi.org/10.1021/ja00856a034
Publikováno v:
The Journal of Organic Chemistry. 39:2390-2393
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d3155e8e1e1707481fcdc250dbb70f7
https://doi.org/10.1021/jo00930a013
https://doi.org/10.1021/jo00930a013