Zobrazeno 1 - 10
of 159
pro vyhledávání: '"H, Saikachi"'
Autor:
Hideaki Sasaki, Douwe G. van Engen, Simon P. J. M. van Nispen, Albert M. van Leusen, Jacob H. Bregman, H. Saikachi, Tokujiro Kitagawa
Publikováno v:
Recueil des Travaux Chimiques des Pays-Bas. 101:28-34
Base-induced cycloadditions of tosylmethyl isocyanide to a series of isothiocyanates have been investigated. Depending on the reaction conditions, thiazoles 5 and/or imidazoles 7 are obtained, with the thiazoles, in particular, being obtained with hi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3a4383a6a2e30a344ba5916842444c0
https://doi.org/10.1002/recl.19821010102
https://doi.org/10.1002/recl.19821010102
Autor:
H. Saikachi, Tokujiro Kitagawa
Publikováno v:
Chemical and Pharmaceutical Bulletin. 25:1651-1657
5-Substituted 2-furoyl azides (7a, 7b and 7c), 5-substituted 2-thenoyl azides (7d, 7e and 7f), 2-, 3- and 4-pyridinemonocarbonyl azides (7j, 7k and 7l) and p-substituted benzoyl azides (7g, 7h and 7i) were prepared from the corresponding carboxylic a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0d25ff5635d76f29ee057df5d6cf1411
https://doi.org/10.1248/cpb.25.1651
https://doi.org/10.1248/cpb.25.1651
Publikováno v:
Chemical and Pharmaceutical Bulletin. 27:2857-2861
The reaction of tosylmethyl isocyanide (7) with methyl propiolate (14a), dimethyl acetylenedicarboxylate (14b), methyl 3-(2-furoyl) propiolate (14c), and methyl 3-benzoylpropiolate (14d) in the presence of an equimolar amount of base at room temperat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72f557246ae828be557bbd2c7c5a99cd
https://doi.org/10.1248/cpb.27.2857
https://doi.org/10.1248/cpb.27.2857
Publikováno v:
Chemical and Pharmaceutical Bulletin. 29:237-244
The kinetics of the thermal Curtius rearrangement of benzoheteroaroyl azides, i.e., 2-benzofuroyl azide (2), 2-benzothenoyl azide (4), 2-indolecarbonyl azide (6), 2-, 3-, 4-, 5-, 6-, and 7-quinolinecarbonyl azides (8, 10, 12, 13, 14, and 15), and 1-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c3955c61bfa5f403dd32c9d06a55e2e3
https://doi.org/10.1248/cpb.29.237
https://doi.org/10.1248/cpb.29.237
Publikováno v:
Chemical and Pharmaceutical Bulletin. 31:723-726
1-Isocyanomethyl azoles (14a-f) were synthesized by the reaction of the corresponding azoles (11a-f) with trimethylformamidomethylammonium iodide (8), followed by dehydration of the resulting 1-formamidomethyl azoles (13a-f) using phosphorus oxychlor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::845924164abfd3b0e9e9cf246cc5d07e
https://doi.org/10.1248/cpb.31.723
https://doi.org/10.1248/cpb.31.723
Autor:
Tokujiro Kitagawa, H. Saikachi
Publikováno v:
Chemical and Pharmaceutical Bulletin. 26:1054-1060
Kinetic studies of the thermolytic Curtius rearrangement of set A of 5-substituted 2-furoyl azides (1-6), 5-substituted 2-thenoyl azides (7, 8 and 9) and 2-pyrroyl azide (10), and set B of p-substituted benzoyl azides (11, 12 and 13) and 2-, 3- and 4
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0998e828d85539495e839f722c39ffc1
https://doi.org/10.1248/cpb.26.1054
https://doi.org/10.1248/cpb.26.1054
Publikováno v:
Tetrahedron. 30:1033-1041
2,15 - Dimethoxycarbonyl - [15]annulenone 4,7:10,13 - dioxide (14) has been prepared by the condensation of cis -α,β -bis(5 - formyl - 2 - furyl)ethy]ene (13) with dimethyl acetonedicarboxylate. Treatment of 14 with conc H2SO4 led to 4,7:10,13-diox
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95de8a49782e68fd989cf793383d2522
https://doi.org/10.1016/s0040-4020(01)97265-5
https://doi.org/10.1016/s0040-4020(01)97265-5
Autor:
Tokujiro Kitagawa, H. Saikachi
Publikováno v:
Chemical and Pharmaceutical Bulletin. 25:809-811
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0ea2e790b004d23846c259d47deaee6
https://doi.org/10.1248/cpb.25.809
https://doi.org/10.1248/cpb.25.809
Publikováno v:
Chemical & pharmaceutical bulletin, 30(11), 4199-4204
Tosylmethyl isocyanide (4) reacted readily with azole carbaldehydes, i.e., indole-2-carbaldehyde (8a), pyrazole-3 (5)-carbaldehyde (8b), 3 (5)-methylpyrazole-5 (3)-carbaldehyde (8c), 3 (5)-(2-furyl) pyrazole-5 (3)-carbaldehyde (8d), 1, 2, 4-triazole-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::862b22320cb0696e917290cb57bfc8a4
https://research.rug.nl/en/publications/f92d7fdb-411f-4bdc-9d33-93c8821efd02
https://research.rug.nl/en/publications/f92d7fdb-411f-4bdc-9d33-93c8821efd02
Autor:
H. Saikachi, J. H. Bregman, Hideaki Sasaki, D. Van Engen, Tokujiro Kitagawa, S. P. J. M. van Nispen, A. M. Van Leusen
Publikováno v:
Chemischer Informationsdienst. 13
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d51056a83405456bb1d7e25689897f4f
https://doi.org/10.1002/chin.198218212
https://doi.org/10.1002/chin.198218212