𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Conversion of 2′-hydroxychalcones to flavanones catalyzed by cobalt Schiff base complex

✍ Scribed by Kazushige Maruyama; Kimihiro Tamanaka; Akira Nishinaga; Akira Inada; Tsutomu Nakanishi

Publisher
Elsevier Science
Year
1989
Tongue
French
Weight
224 KB
Volume
30
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis

Co(salpr) catalyzes the conversion of 2'-hydroxychalcones to flavanones in methanol under oxygen. Base catalysis by Co(salpr)(OH) produced in situ is responsible for the reaction, which is found to proceed reversibly. Cobalt(II) Schiff base complexes [ColI (SB) ] exhibit dioxygenase-like activity in aprotic solvents, whereas in protic solvents they catalyze monooxygen-

📜 SIMILAR VOLUMES

Asymmetric induction in oxygenation of s
Asymmetric induction in oxygenation of styrene catalyzed by cobalt schiff base complex
✍ Akira Nishinaga; Hitoshi Yamato; Toshio Abe; Kazushige Maruyama; Teruo Matsuura 📂 Article 📅 1988 🏛 Elsevier Science 🌐 French ⚖ 265 KB

The oxygenation of styrene catalyzed by optically active cobalt Schiff base complexes in 2-propanol gives an enantiomer excess of l-phenylethanol. The asymmetric induction may be accomplished in two steps: addition of CoH species to styrene and decomposition of 1-phenylethyl hydroperoxide. Cobalt Sc

Autoxidation of 2,6-di-t-butylphenol cat
Autoxidation of 2,6-di-t-butylphenol catalyzed by cobalt (II) schiff-base complex bound to cationic latex
✍ M. Hassanein; F.I. Abdel-Hay; T. El-Hefnawy El-Esawy 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 223 KB

Al~tract--A cationic latex has been prepared by emulsion copolymerization of styrene and divinylbenzene with 2 mol% of quaternary ammonium ion surfactant monomer 2. The cationic latex-bound cobalt (II) complex of N,N'-ethylenebis-(salicylaldimine-5-sodium sulphonate) 1 showed high catalytic activity

Alternating Copolymerization of Carbon D
Alternating Copolymerization of Carbon Dioxide and Propylene Oxide Catalyzed by Cobalt Schiff Base Complex
✍ Yongsheng Niu; Hongchun Li; Xuesi Chen; Wanxi Zhang; Xiuli Zhuang; Xiabin Jing 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 302 KB

## Abstract Cobalt 2,4‐dinitrophenolate (complex **1**) based upon a __N__,__N__,__O__,__O__‐tetradentate Schiff base ligand framework was prepared. X‐ray diffraction analysis confirmed that complex **1** was triclinic species with a six‐coordinated central cobalt octahedron in the solid. Asymmetri