Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Kiyotoshi Kato"'
Publikováno v:
Tetrahedron Letters. 61:151366
Two diphosphines bearing an ethynylene and a 1,2-phenylene linkers between the sterically crowded triarylphosphine moieties have been synthesized by employing Sonogashira and Suzuki-Miyaura couplings as key reactions, respectively. Intramolecular int
Publikováno v:
Tetrahedron Letters. 55:322-325
A reaction of the radical cation of tris(2,4,6-triisopropylphenyl)phosphine with oxygen gave a phosphonium salt resulting from the introduction of the oxygen atom to the phosphorus and the formation of a five membered ring by participation of the ort
Publikováno v:
Bulletin of the Chemical Society of Japan. 80:1791-1798
Crowded triarylphosphines carrying a nitroxide radical were synthesized to investigate intramolecular interaction between the crowded triarylphosphine redox centers and a neutral radical. A crowded...
Autor:
Kiyotoshi Kato, Fumiki Murakami, Katsuhide Sutoh, Mariko Watanabe, Masaaki Yoshifuji, Shigeru Sasaki, Midori Murakami
Publikováno v:
Journal of Organometallic Chemistry. 690:2664-2672
4,4′-Diphosphinobiaryls and 1,3- and 1,4-borylphosphinobenzenes carrying crowded triarylphosphine moieties were synthesized by reaction of the corresponding diarylchlorophosphine with an arylcopper(I) reagent. Intramolecular interaction of the phos
Publikováno v:
Chemistry Letters. 33:1004-1005
[η4-Tetrakis(arylethoxyphosphoryl)cyclobutadiene](η5-cyclopentadienyl)cobalt(I) complexes were synthesized by reaction of bis(arylethoxyphosphoryl)acetylenes with CpCo(CO)2 and several diastereomer...
Publikováno v:
Phosphorus, Sulfur, and Silicon and the Related Elements. 177:1997-1997
Autor:
Kiyotoshi Kato, Shizuya Maekawa
Publikováno v:
BUNSEKI KAGAKU. 16:422-427
メチルチモールブルー(MTB)を用いて鉄鋼中の微量マグネシウムを吸光光度定量するための適正条件を検討した.マグネシウム-MTB錯体はメチルアルコールの共存においてpH9.3~10.4の範囲で生
Autor:
Kiyotoshi Kato, Shizuya Maekawa
Publikováno v:
BUNSEKI KAGAKU. 16:485-488
A photometric determination of phosphorus in niobium steel with molybdenum blue has been studied. The established procedure is as follows: 0.5 to 1 g of sample is decomposed with 10 ml of aqua regia, to this is added 10 to 15 ml of perchloric acid an
Publikováno v:
BUNSEKI KAGAKU. 18:1334-1339
Autor:
Shizuya Maekawa, Kiyotoshi Kato
Publikováno v:
BUNSEKI KAGAKU. 17:70-75
スチルバゾを用いてフェロバナジウム, フェロチタン, フェロジルコニウムおよびフェロニオブ中の0.01~約5%範囲のアルミニウムを簡単かつ迅速に吸光光度定量するための適正条件を研究