Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Jean Claude Pommelet"'
Publikováno v:
Molecules, Vol 5, Iss 10, Pp 1130-1138 (2000)
Thermal decomposition of Meldrum's acid derivatives and rearrangement of (alkylsulfanyl) or (propargylamino)methylene ketene intermediates leads in one step to bis thienyl- or bis pyrrolyl-alkanes.
Externí odkaz:
https://doaj.org/article/79351b4a9cbc471fa960cfbf38a95409
Autor:
L. Z. Chen, Jean‐Claude Pommelet, Heinz-G. Viehe, André Maquestiau, Robert Flammang, W. Masamba, Robert Merényi
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 98:529-546
Tandem mass spectrometry has been applied to investigate the behaviour of bis-captodative (cd) substituted cyclopropanes NC(SR)CCH2C(SR)CN [1, R=CH3; 2, R=tBu and 3, R=C6H5] upon electron impact (EI) and flash-vacuum pyrolysis (FVP) conditions. Ring-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a0c3c9fedf9bc66cba82ff9639dad0d2
https://doi.org/10.1002/bscb.19890980804
https://doi.org/10.1002/bscb.19890980804
ChemInform Abstract: SO2 Extrusion in 1,2,6-Thiadiazine 1,1-Dioxides: A Novel Synthesis of Pyrazoles
Publikováno v:
ChemInform. 24
A novel synthesis of the pyrazole ring involving SO2 extrusion by flow vacuum pyrolysis in the 1,2,6-thiadiazine 1,1-dioxide system is described. The reaction has potential industrial significance for routes to pyrazoles or functionalized pyrazoles t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d70af9fff3f990e7ca7f1e9129f6c74a
https://doi.org/10.1002/chin.199332163
https://doi.org/10.1002/chin.199332163
Autor:
Primoz Lorencak, Abdelhamid Ben Cheikh, Klaus Peter Netsch, Curt Wentrup, Josselin Chuche, Jean Claude Pommelet, Noel Manisse
Publikováno v:
The Journal of Organic Chemistry. 56:970-975
The syntheses and flash vacuum thermolyses of 5-[(alkylamino)methylene]-2,2-dimethyl-1,3-dioxane-4,6-diones (Meldrum's acid derivatives) 13a-i are described. Thermolysis of 13a as well as of ethyl 3-(tert-butylamino)acrylate (22) gives a tautomeric m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d62e9ec5cfd2730af0f39ba60f6c18b6
https://doi.org/10.1021/jo00003a014
https://doi.org/10.1021/jo00003a014
Syntheses of omega-hydroxy-alpha,alpha-difluoromethylphosphonates by oxacycle ring-opening reactions
Publikováno v:
Organic letters. 6(21)
[reaction: see text] Oxacycle ring-opening reactions from a non-HCFC-based source of phosphonodifluoromethyl carbanion 1 are reported. This straightforward strategy opens access to a variety of primary and secondary omega-hydroxy-alpha,alpha-difluoro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::1d20b7fcecf7e673fa001df00f3381a9
https://pubmed.ncbi.nlm.nih.gov/15469339
https://pubmed.ncbi.nlm.nih.gov/15469339
Publikováno v:
Canadian Journal of Chemistry. 71:410-412
A novel synthesis of the pyrazole ring involving SO2 extrusion by flow vacuum pyrolysis in the 1,2,6-thiadiazine 1,1-dioxide system is described. The reaction has potential industrial significance for routes to pyrazoles or functionalized pyrazoles t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe5c06542daa23eebd86a4b56241a504
https://doi.org/10.1139/v93-060
https://doi.org/10.1139/v93-060
Publikováno v:
Molecules
Volume 5
Issue 10
Pages 1130-1138
Molecules, Vol 5, Iss 10, Pp 1130-1138 (2000)
Volume 5
Issue 10
Pages 1130-1138
Molecules, Vol 5, Iss 10, Pp 1130-1138 (2000)
Thermal decomposition of Meldrum's acid derivatives and rearrangement of (alkylsulfanyl) or (propargylamino)methylene ketene intermediates leads in one step to bis thienyl- or bis pyrrolyl-alkanes.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90d77ff9c94c1c22797b3816e57ac0ae
Autor:
G屍ard Lhommet, Mansour Haddad, Jean Pierre C四屍ier, Gjergj Haviari, Hamid Dhimane, Jean Claude Pommelet, Josselin Chuche
Publikováno v:
HETEROCYCLES. 31:1251
Two complementary methods for the synthesis of title compounds , namely, monodecarboxylating transesterification of β-enamino esters (I) followed by intramolecular cyclization, and direct cyclization of I under flash vacuum thermolysis conditions, h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44831736720fa25790241e7a7b0afde1
https://doi.org/10.3987/com-90-5319
https://doi.org/10.3987/com-90-5319
Autor:
J. P. Celerier, Josselin Chuche, H. Dhimane, Mansour Haddad, Gérard Lhommet, Jean Claude Pommelet
Publikováno v:
The Journal of Organic Chemistry. 53:5680-5685
Synthese des composes du titre avec n=3,4 ou 5 a partir des pyrrolidones-2, piperidones-2 et perhydroazepinones-2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a04fc0a80d8c99eadbc0c41ad3a54b2f
https://doi.org/10.1021/jo00259a013
https://doi.org/10.1021/jo00259a013
Publikováno v:
Tetrahedron Letters. 29:5919-5921
Resume Heterosubstituted methyleneketenes 2 d-g are obtained by flash-vacuum pyrolysis of Meldrum's acid derivatives 1 d-g. The methoxymethyleneketene 2 e is stable for a few hours at room temperature and gives 3 e by dimerization; in contrast, the m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f0f185e90e856ac8ef4d2bb1c7186a22
https://doi.org/10.1016/s0040-4039(00)82226-1
https://doi.org/10.1016/s0040-4039(00)82226-1