Zobrazeno 1 - 10
of 79
pro vyhledávání: '"Walter Lwowski"'
Autor:
Walter Lwowski, Hossein A. Dabbagh
Publikováno v:
The Journal of Organic Chemistry. 65:7284-7290
Equilibrium of acylated-5-alkyloxy (aryloxy) tetrazoles and acylated-imidoyl azides was measured by (1)H NMR and/or IR spectroscopy. In nonpolar solvents the relatively weakly electron-withdrawing acyl group (CO(2)CH(3)) favored acylation at the 2-po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3192d00e83cdf305dcb06a847b3ca764
https://doi.org/10.1021/jo000267g
https://doi.org/10.1021/jo000267g
Autor:
Fred Hauck, John M. Beaton, Friedrich Bickelhaupt, William A. Ayer, Jürgen Sauer, Eugene Le Goff, Paul Buchschacher, John Hannah, Willy Leimgruber, Shǒ Itǒ, Hans Dutler, Robert B. Woodward, Zdenek Valenta, Gerhard L. Closs, Raymond Bonnett, Albert Langemann, Heinrich Volz, Walter Lwowski
Publikováno v:
Tetrahedron. 46:7599-7659
The total synthesis of chlorophyll a starting from Knorr's pyrrole (1) is described with full experimental detail. Forty six stages are involved to reach the target molecule, chlorin e6 trimethyl ester (46), from which the preparation of chlorophyll
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb6f4a6289e6d3f22dbb6d853d3e711d
https://doi.org/10.1016/0040-4020(90)80003-z
https://doi.org/10.1016/0040-4020(90)80003-z
Autor:
Walter Lwowski, Hossein A. Dabbagh
Publikováno v:
The Journal of Organic Chemistry. 54:3952-3957
The thermal decomposition of imidoyl azides (ArO-C=N-Z)-N3, (Ar = p-NO2C6H4-, p-Br-C6H4-, p-Cl-C6H4-, p-C6H5-, p-CH3-C6H4-, 2,4-dimethyl-C6H3-, 2,4,6trimethyl-C6H2-, p-CH3O-C6H4and Z = p-CH3-C6H4-SO2-, 2,4,6-trimethyl-C6H2-SO2-, CN) in the solid phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a701128514ada653c0cde9aaec40963
https://doi.org/10.1021/jo00277a038
https://doi.org/10.1021/jo00277a038
Publikováno v:
The Journal of Organic Chemistry. 40:2608-2612
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::59a8aeee8e891718b9d09c9b9b7f2331
https://doi.org/10.1021/jo00906a008
https://doi.org/10.1021/jo00906a008
Autor:
Walter Lwowski, Dietrich Grassmann
Publikováno v:
Justus Liebigs Annalen der Chemie. 1976:1143-1149
Sowohl die Photolyse des α-(Benzylidenhydrazono)benzylazids (1) als auch die Zersetzung des Ions PhC(N-NCHPh)-N⊖OSO2C6H4-NO2(p) (13) liefern Benzonitril und Phenyldiazomethan In hohen Ausbeuten. Die Ergebnisse werden durch die Annahme erklart, das
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b48519f010d04cd642c3cd7db71a566
https://doi.org/10.1002/jlac.197619760615
https://doi.org/10.1002/jlac.197619760615
Autor:
Suji Kanemasa, Kunihisa Yoshida, V. T. Ramakrishnan, T. K. Thiruvengadam, Roy A. Murray, A. Subbaraj, Walter Lwowski
Publikováno v:
The Journal of Organic Chemistry. 51:1719-1723
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82650a9b8929cb3fa808ccf149c5cfc8
https://doi.org/10.1021/jo00360a016
https://doi.org/10.1021/jo00360a016
Autor:
Greg Hall, Walter Lwowski, Keith Weissinger, Jay Moody, Harry H. Gibson, Tom Lawshae, Aida Abashawl, Kirk LeBlanc
Publikováno v:
The Journal of Organic Chemistry. 51:3858-3861
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::191c0c7f7039c0d7dc524e3d2373e72f
https://doi.org/10.1021/jo00370a020
https://doi.org/10.1021/jo00370a020
Autor:
Walter Lwowski, G. Robert. Felt
Publikováno v:
The Journal of Organic Chemistry. 41:96-101
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c8b36684e9c3820ead94b6f41566c49
https://doi.org/10.1021/jo00863a021
https://doi.org/10.1021/jo00863a021
Publikováno v:
The Journal of Chemical Physics. 72:4123-4131
The R branch, a dipole microwave rotational spectra of four isotopic species of methyl azidoformate have been assigned over the range 18–40 GHz. The assignment includes vibrational satellite series as well as the vibrational ground state transition
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::189e64dd51fd0456cca28bd6ffcea81f
https://doi.org/10.1063/1.439641
https://doi.org/10.1063/1.439641