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2018 Fiscal Year Final Research Report

Synthesis of multi-fused aromatic compounds by sequential benzyne reactions

Research Project

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Project/Area Number 16K08164
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Chemical pharmacy
Research InstitutionOsaka University

Principal Investigator

Ikawa Takashi  大阪大学, 薬学研究科, 准教授 (20453061)

Project Period (FY) 2016-04-01 – 2019-03-31
Keywordsベンザイン / ベンズジイン等価体 / リスペリドン / 高歪化合物 / 連続反応 / 多環式複素環化合物 / 収束合成 / 三重結合
Outline of Final Research Achievements

We have devised a novel benzdiyne equivalent, capable of quadruple functionalization by sequential benzyne generation and reaction with arynophiles. The key features of this method include the chemoselective generation of two triple bonds in a single benzene ring under fluoride-ion-mediated mild conditions, and the regiocontrol of each benzyne reaction by the substituent next to the triple bond. This method produced various benzo-fused heteroaromatic compounds via reactions with arynophiles, such as furans, azides, and diazo compounds. A validation of the method is given in the convergent synthesis of the antipsychotic drug risperidone.

Free Research Field

化学系薬学

Academic Significance and Societal Importance of the Research Achievements

ベンゼン環内に2つの三重結合を有するベンズジインは、極めて不安定なため、これらを有機合成に利用することは通常困難である。一方、同一ベンゼン環内に三重結合を2箇所で順次発生させることができれば、その後の反応によりベンゼン環に多様な官能基を導入する有用な手法となる。今回我々は、新しいベンズジイン等価体を開発し、これを医薬品リスペリドンの効率的な合成へと応用することに成功した。

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Published: 2020-03-30  

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