| JaLCDOI | 10.18926/fest/12837 |
|---|---|
| FullText URL | 13_121_124.pdf |
| Author | Takaguchi, Yutaka| Yanagimoto, Yasushi| |
| Abstract | Amphiphilic anthryl dendrons 5 and 6, which have carboxylate groups or oligo(ethyleneoxide) groups at the terminals, show solvatochromic properties. Reaction efficiency of photodimerization and dynamic light scattering (DLS) experiment of 5 and 6 reveal that formation of the aggregate of dendrons 5 or 6 plays a crucial role in this solvatochromism. Interestingly, solvatochromic property of anthryl dendron 6 was useful for determination of the ratio of methanol/water in solution as a fluorescent probe. |
| Keywords | dendrimer anthracene fluorescence solvatochromism water methanol |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2008-03 |
| Volume | volume13 |
| Issue | issue1 |
| Start Page | 121 |
| End Page | 124 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002304793 |
| JaLCDOI | 10.18926/fest/11508 |
|---|---|
| FullText URL | 010_111_117.pdf |
| Author | Alam Ashraful| Takaguchi, Yutaka| Tsuboi, Sadao| |
| Abstract | Synthesis of ellagic acid and its 4,4'-di-Ο-alkyl derivatives from gallic acid is described. Ellagic acid is prepared by oxidative coupling of gallic acid with ο-chloranil. Functionalized methyl bormogallate underwent Ullmann coupling to give the biphenyl that upon lactonization resulted in the ellagic acid and its alkoxy derivatives. |
| Keywords | ellagic acid 4,4'-di-Ο-alkylellagic acid Ullmann coupling oxidative coupling |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2005-02-28 |
| Volume | volume10 |
| Issue | issue1 |
| Start Page | 111 |
| End Page | 117 |
| ISSN | 1341-9099 |
| language | Japanese |
| File Version | publisher |
| NAID | 120002313598 |
| JaLCDOI | 10.18926/fest/11506 |
|---|---|
| FullText URL | 010_105_109.pdf |
| Author | Alam Ashraful| Takaguchi, Yutaka| Tsuboi, Sadao| |
| Abstract | Ortho-monobromination of phenols and polyphenols by 1,3-dibromo-5,5-dimethylhydantoin (DBDMH) is described. A simple addition of commercially available DBDMH to phenols and polyphenols in chloroform at room temperature resulted in a good to excellent yield of corresponding ortho-monobromo derivatives. |
| Keywords | ortho-monobromination phenol polyphenol DBDMH |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2005-02-28 |
| Volume | volume10 |
| Issue | issue1 |
| Start Page | 105 |
| End Page | 109 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313473 |
