Author
K. Tamanaka
Bio: K. Tamanaka is an academic researcher from Osaka Institute of Technology. The author has contributed to research in topics: Schiff base & Catalysis. The author has an hindex of 2, co-authored 2 publications receiving 29 citations.
Topics: Schiff base, Catalysis, Cobalt
Papers
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TL;DR: In this paper, it was shown that base catalysis by Co(salpr) (OH) produced in situ is responsible for the reaction, which is found to proceed reversibly.
26 citations
TL;DR: In this article, it was shown that base catalysis by Co(salpr) (OH) produced in situ is responsible for the reaction, which is found to proceed reversibly.
Abstract: 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.
3 citations
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TL;DR: This review article summarizes the applications of bismuth(III) compounds in organic synthesis since 2002 and is largely organized by the reaction type although some reactions can be placed in multiple sections.
Abstract: This review article summarizes the applications of bismuth(III) compounds in organic synthesis since 2002. Although there are an increasing number of reports on applications of bismuth(III) salts in polymerization reactions, and their importance is acknowledged, they are not included in this review. This review is largely organized by the reaction type although some reactions can clearly be placed in multiple sections. While every effort has been made to include all relevant reports in this field, any omission is inadvertent and we apologize in advance for the same (358 references).
219 citations
TL;DR: In this paper, the authors investigated the possibility of using camphorsulfonic acid as chiral Bronsted acid catalysts for asymmetric cyclization of 2-hydroxychalcones to flavanones.
68 citations
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TL;DR: This chapter discusses the five remaining flavonoid structural types, here collectively known as the minor flavonoids, chalcones, aurones, dihydrochalcone, flavanones and diHydroflavonols, in the same order and format as used in the earlier two volumes.
Abstract: It is the purpose of this chapter to discuss the five remaining flavonoid structural types, here collectively known as the minor flavonoids, chalcones, aurones, dihydrochalcones, flavanones and dihydroflavonols. In order to orientate the reader it should be mentioned that chalcones, aurones and dihydrochalcones were discussed in Chapter 9 of The Flavonoids (1975) while flavanones and dihydroflavonols were treated in Chapter 11. In The Flavonoids-Advances in Research (1982) the five structural types were brought together in Chapter 6 under the present name. As far as is practicable I have presented the material here in the same order and format as used in the earlier two volumes. This makes it possible for the reader to compare current material easily and directly with material in the corresponding sections in the other two books. For the most part each structural type is presented in terms of increasing structural complexity: the primary classification is based upon B-ring oxygenation with the presentation of compounds in order of degree of A-ring oxygenation, O-alkylation and C-alkylation.
60 citations
01 Jan 1996
45 citations
TL;DR: A new family of benzene-based chiral heterodisulfoxide ligands L1-L5 was synthesized in a single step and applied in the rhodium-catalyzed asymmetric 1,4-addition of arylboronic acids to chromenones.
41 citations