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Development of New Lewis Acid Catalysts based on Late-Transition Metal Complexes

Research Project

Project/Area Number 12450361
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Synthetic chemistry
Research InstitutionNagoya University (2002)
Toyohashi University of Technology (2000-2001)

Principal Investigator

NISHIYAMA Hisao  Nagoya University, Graduate School of Engineering, Professor, 工学研究科, 教授 (40135421)

Project Period (FY) 2000 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥14,000,000 (Direct Cost: ¥14,000,000)
Fiscal Year 2002: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2001: ¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 2000: ¥9,800,000 (Direct Cost: ¥9,800,000)
KeywordsLewis Acid / Asymmetric Synthesis / Oxazoline / aqueous system / Rhodium / 1,3-dipolar / 遷移金属触媒 / オキケゾリン / 水 / 1、3-双極付加 / アルドール反応 / 触媒 / 水素触媒 / ビスオキサゾリン / 白金 / 不斉 / ルイス酸触媒 / 遷移金属錯体 / 環境調和型 / 水和錯体
Research Abstract

In order to develop a new class of Lewis acid catalysts, complexes of late-transition metals have been investigated including chiral skeleton on the binding oragnic parts. The new complexes have been characterized by NMR and X-ray analysis. The catalysts have also designed to have some profiles, such as water tolerable and recyclable.
We have developed new type of ligands including chiral oxazoline-pyridine derivatives, bis(oxazolinyl)pyridines, bis(oxazolinyl)phenyl, and bis(oxazolinyl)xantenes, which were derived from optically active beta-aminoalcohols. We have determined structures of several rhodium, ruthenium, platinum, and palladium complexes with oxazoline skeletons by X-ray analysis. Espetially, Phebox-Rh complexes exhibited catalytic activity as Lewis acids to promote Diels-Alder reaction, hetero-Diesl-Alder reaction, and aldol reactions giving higher enantioselectivities. The catalyst shows the activity in aqueous media.

Report

(4 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] S.Iwasa, T.Tsushima, H.Nishiyama: "Chiral bis (trialkoxysiloxymethye oxazolinyl) Pyridine Ligands"Tetrahedron. 58. 227-232 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.Iwasa, T.Tsushima, H.Nishiyama: "Chiral bis(trialkoxysiloxymethyl-oxazolinyl)pyridine"Tetrahedron. 58. 227-232 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] S.Iwasa, T.Tsushima, H.Nishiyama: "Chiral bis (trialkylsiloxymethyloxazolinyl) pyridine ligands"Tetrahedron. 58. 227-232 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Iwasa, H.Maeda, K.Nishiyama, S.Tsushia, Y.Tukamoto, H.Nishiyama: "A. Highly enantioselective 1,3-dipolar cycloaddition reaction in alcoholic media : Ni(II)-pybox-tipsom catalyst"Tetrahedron. 58. 8281-8287 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] S.Iwas, S.Tsushima, T.Shimad, H.Nishiyama: "Chiral bis(trialkylsi Toxymethylexazolinyl)pyridine ligands.Highly enantio selective 13-dipolar cyclo aculition reactins"Tetrahedron. 58. 227-232 (2002)

    • Related Report
      2001 Annual Research Report
  • [Publications] Y.Motoyama,H.Nishiyama et.al.: "Bis(oxazolinyl) phenylrhodium (III) Aqua complexes : Synthesis, Structure, Enantioselective Allylation of Aldehydes and its Mechanistic Studies"Organometallics. 20(印刷中). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Motoyana,H.Nishiyama et.al.: "Asymmetric Hetero Diels-Alder Reaction of Danishefsky's Dienes and Glyoxylates with chiral Bis(oxazolinyl) phonylrhodium (III)..."Tetrahedron. 57. 853-860 (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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