Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Hitoshi Nagao"'
Autor:
Yasuhiro Kubota, Hisayoshi Kanoh, Ryohei Kasugai, Siddanagouda Biradar, Masaki Matsui, Motoo Shiro, Hitoshi Nagao, Kazumasa Funabiki
Publikováno v:
Dyes and Pigments. 125:249-258
Any liquid azo dyes, in which auxochrome such as dialkylamino, alkoxy, and amino group is attached in a molecule, were produced. In a series of 2-alkyl-4’-(dimethylamino)azobenzenes, the butyl, hexyl, octyl, and dodecyl derivatives were liquid at r
Publikováno v:
Synthetic Communications. 38:3208-3214
(Chloromethylene)dimethylammonium chloride (Vilsmeier reagent) works as an efficient condensation reagent in the formation of carboxylic esters from carboxylic acids and alcohols under mild conditions in a one-pot procedure. Secondary alcohols are co
Publikováno v:
Bulletin of the Chemical Society of Japan. 80:2406-2412
Chiral quaternary ammonium phenoxides were prepared readily from commercially available cinchona alkaloids and employed as novel useful asymmetric organocatalysts. Among these chiral quaternary ammonium phenoxides, a cinchonidine-derived phenoxide th
Autor:
Hitoshi Nagao, Shigeru Motegi
Publikováno v:
JAPAN TAPPI JOURNAL. 58:177-183
近年の高速抄紙化,用水のクローズド化,古紙配合率の増加などにより,ウエットエンド化学はますます重要になっている。ウエットエンド化学で最も重要な現象である凝集と吸着をコ
Publikováno v:
ChemInform. 40
(Chloromethylene)dimethylammonium chloride (Vilsmeier reagent) works as an efficient condensation reagent in the formation of carboxylic esters from carboxylic acids and alcohols under mild conditions in a one-pot procedure. Secondary alcohols are co
Publikováno v:
ChemInform. 39
Publikováno v:
ChemInform. 38
Asymmetric trifluoromethylation of ketones with (trifluoromethyl)trimethylsilane catalyzed by cinchonidine-derived quaternary ammonium phenoxides proceeded smoothly to afford the trifluoromethylate...
Publikováno v:
ChemInform. 38
Chiral quaternary ammonium phenoxides are readily prepared from commercially available cinchona alkaloids and are employed as useful new asymmetric organocatalysts. The cinchonidine-derived catalyst is highly effective on Michael addition and success
Publikováno v:
ChemInform. 38
Chiral quaternary ammonium phenoxides were readily prepared from commercially available cinchona alkaloids and proved to be useful new asymmetric organocatalysts. Among various chiral quaternary ammonium phenoxides, a cinchonidine-derived catalyst th
Publikováno v:
ChemInform. 38
The first efficient synthesis of 3-amino-3,4-dihydropyran-2-ones from glycine-derived silyl enolates and α,β-unsaturated ketones was successfully performed by using quaternary ammonium phenoxide pr...