Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Junichi Ogikubo"'
Publikováno v:
Tetrahedron Letters. 54:1707-1710
Reaction of diolchlorins—made from meso -tetraarylporphyrins by OsO 4 -mediated oxidation—with NaIO 4 on silica gel in the presence of a secondary amine or alcohol, followed by MnO 4 − -induced oxidation, leads to the replacement of a pyrroline
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa357328046836f67a64a3954822caf0
https://doi.org/10.1016/j.tetlet.2013.01.070
https://doi.org/10.1016/j.tetlet.2013.01.070
Publikováno v:
The Journal of Organic Chemistry. 78:2840-2852
The formal replacement of one or two pyrrole groups in meso-tetraphenylporphyrin by oxazole moieties is described, generating inter alia the bacteriochlorin-type chromophores oxazolobacteriochlorins (oxabacteriochlorins) and bisoxazolobacteriochlorin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a0f171fe02b158da2e9b32056d5f18c
https://doi.org/10.1021/jo400031r
https://doi.org/10.1021/jo400031r
Autor:
Hannah M. Rhoda, Joshua Akhigbe, Victor N. Nemykin, Junichi Ogikubo, Christian Brückner, Christopher J. Ziegler, Jared R. Sabin
Publikováno v:
The journal of physical chemistry. A. 120(29)
A large set of free-base and transition-metal 5,10,15,20-tetraphenyl-substituted chlorins, bacteriochlorins, and isobacteriochlorins and their pyrrole-modified analogues were investigated by combined UV-visible spectroscopy, magnetic circular dichroi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::84d2ad5cc87ca0c3c90950f377c82f54
https://pubmed.ncbi.nlm.nih.gov/27400337
https://pubmed.ncbi.nlm.nih.gov/27400337
Autor:
Frank Roschangar, Daniel R. Fandrick, Jinhua J. Song, Jaideep Saha, Chris H. Senanayake, Sanjit Sanyal, Junichi Ogikubo, Keith R. Fandrick, Heewon Lee
Publikováno v:
Organic Letters. 13:5616-5619
The general zinc-catalyzed allenylation of aldehydes and ketones with an allenyl boronate is presented. Preliminary mechanistic studies support a kinetically controlled process wherein, after a site-selective B/Zn exchange to generate a propargyl zin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fa7eee03553c71c1bbde1ba1cfe751b
https://doi.org/10.1021/ol202343c
https://doi.org/10.1021/ol202343c
Autor:
Junichi Ogikubo, Christian Brückner
Publikováno v:
Organic Letters. 13:2380-2383
Alkyl-Grignard addition to meso-tetraphenylporpholactone generates monoalkyl- and gem-bis-alkyloxazolochlorins. Together with compounds made by further synthetic manipulations of these derivatives,...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50d9d8947e385ea250cbe3704c8c8747
https://doi.org/10.1021/ol2006264
https://doi.org/10.1021/ol2006264
Publikováno v:
Organometallics. 27:6233-6235
An equilibrium between [(SIMes)Cu-CF3] (1, SIMes = 1,3-dimesitylimidazolin-2-ylidene) and the cuprate salt [(SIMes)2Cu][(CF3)2Cu] (2) was observed. Synthetic methods to prepare and isolate 2 are reported. Trifluoromethylations using equilibrium mixtu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7b80a38530769f7baf9af251ca7d6f3
https://doi.org/10.1021/om800794m
https://doi.org/10.1021/om800794m
Autor:
Junichi Ogikubo, Nelu Grinberg, Jaideep Saha, Nitinchandra D. Patel, Heewon Lee, Keith R. Fandrick, Carl A. Busacca, Daniel R. Fandrick, Shengli Ma, Chris H. Senanayake
Publikováno v:
Organic letters. 15(6)
A practical and highly site-selective copper-PhBPE-catalyst-controlled allenylation with propargyl boronates has been developed. The methodology has shown to be tolerant of diverse ketones and aldehydes providing the allenyl adducts in high selectivi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17a7a83db5e5be9d4bf27b2eb030fd9f
https://pubmed.ncbi.nlm.nih.gov/23438081
https://pubmed.ncbi.nlm.nih.gov/23438081
Autor:
Matthias Zeller, Pedro Daddario, Jason R. McCarthy, Christopher J. Ziegler, Michael A. Hyland, Megan N. Sandberg, Jill L. Worlinsky, Robert R. Birge, Matthew J. Ranaghan, Christian Brückner, James T. Engle, Joshua Akhigbe, Junichi Ogikubo
Publikováno v:
The Journal of organic chemistry. 77(15)
The rational syntheses of meso-tetraaryl-3-oxo-2-oxaporphyrins 5, known as porpholactones, via MnO(4)(-)-mediated oxidations of the corresponding meso-tetraaryl-2,3-dihydroxychlorins (7) is detailed. Since chlorin 7 is prepared from the parent porphy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9fc1c22c4a54b626ca890be690dd9d83
https://pubmed.ncbi.nlm.nih.gov/22734444
https://pubmed.ncbi.nlm.nih.gov/22734444
Publikováno v:
The Journal of organic chemistry. 77(14)
The formal replacement of a pyrrole moiety of meso-tetraarylporphyrin 1 by an oxazole moiety is described. The key step is the conversion of porpholactones 4 (prepared by a known two-step oxidation procedure from 1) by addition of alkyl Grignard reag
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4fb4c4700f76570c324e3d2cc2fc8f6d
https://pubmed.ncbi.nlm.nih.gov/22731999
https://pubmed.ncbi.nlm.nih.gov/22731999
Publikováno v:
Handbook of Porphyrin Science (Volume 17) ISBN: 9789814335522
Handbook of Porphyrin Science (Volume 17): With Applications to Chemistry, Physics, Materials Science, Engineering, Biology and Medicine
Handbook of Porphyrin Science (Volume 17): With Applications to Chemistry, Physics, Materials Science, Engineering, Biology and Medicine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::835fa39c1ff418da2224e8c4b32a817e
https://doi.org/10.1142/9789814335508_0003
https://doi.org/10.1142/9789814335508_0003
