研究者詳細

顔写真

ダス ビズワジツト
Das Biswajit
Das Biswajit
所属
大学院薬学研究科 分子薬科学専攻 分子解析学講座(分子変換化学分野)
職名
特任助教(研究)
学位
  • Ph.D.(国立ルケーラ工科大学)

  • Master of Philosophy(サンバルプール大学)

  • M.S.(ベルハンプール大学)

e-Rad 研究者番号
91016021

論文 5

  1. Organic Superbase t-Bu-P4 Catalyzed Concerted Nucleophilic Aromatic Substitution

    Ozora Sasamoto

    Organic Syntheses 2026年

    DOI: 10.15227/orgsyn.103.0236  

    ISSN:2333-3553

  2. Sustainable Organic Photocatalysis for Site-Selective Hydrazocoupling of Electron-Rich Arenes

    Biswajit Das, Sushree Ranjan Sahoo, Amitabha Das, Biswarup Pathak, Debayan Sarkar

    Organic Letters 2023年10月27日

    DOI: 10.1021/acs.orglett.3c03137  

    ISSN:1523-7060 1523-7052

  3. Temperature-Controlled Chemoselective Synthesis of Multisubstituted 4-Alkynyl/trans 4-Alkenyl Coumarins

    Sushree Ranjan Sahoo, Biswajit Das, Debayan Sarkar, Hans Reuter

    The Journal of Organic Chemistry 2022年11月4日

    DOI: 10.1021/acs.joc.2c00994  

    ISSN:0022-3263 1520-6904

  4. Ruthenium (VIII) Catalysed Dearomative Pyridyl C−X Activation: Direct Synthesis of N‐ Alkyl‐2‐pyridones

    Biswajit Das, Nilendri Rout, Debayan Sarkar

    Asian Journal of Organic Chemistry 2021年7月

    DOI: 10.1002/ajoc.202100258  

    ISSN:2193-5807 2193-5815

    詳細を見る 詳細を閉じる

    <jats:title>Abstract</jats:title><jats:p>An efficient synthetic strategy employing pyridyl C−X activation, for the generation of <jats:italic>N</jats:italic>‐alkyl‐2‐pyridones from <jats:italic>N</jats:italic>‐alkyl‐2‐halopyridinium salts is described. As pyridones are dearomatised synthetic derivatives of pyridines, a versatile scope exist for pyridyl C−H functionalisation. The present strategy exemplifies a straight forward in‐situ generation of Ru(VIII), leading catalytic dearomative synthesis of pyridones. The <jats:italic>N</jats:italic>‐alkyl‐2‐pyridones are further reduced to <jats:italic>N</jats:italic>‐alkyl‐2‐piperidones and a plausible mechanism is also drawn, which is supported by some controlled reactions.</jats:p>

  5. Visible Light Assisted Selenylative Intramolecular Dearomative Carbo‐Spirocyclisation (IDCS) of Homologated‐Ynones

    Sushree Ranjan Sahoo, Biswajit Das, Debayan Sarkar, F. Henkel, H. Reuter

    European Journal of Organic Chemistry 2020年2月21日

    DOI: 10.1002/ejoc.201901821  

    ISSN:1434-193X 1099-0690

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    <jats:p>A visible light assisted dearomative selenylative carbo‐spirocyclisation of aromatic homologated‐ynones has been reported. The ynones deliver selenylative spiro‐cyclohexadienones and spiro‐diepoxides at varied temperatures. The prescribed methodology is photo‐catalyst free and scalable. The combination of visible light, molecular oxygen and the products synthesized delivers a uniqueness to the designed methodology.</jats:p>

共同研究・競争的資金等の研究課題 1

  1. シリルアルキルカルボナート反応剤を活用する遷移金属触媒的カルボキシル化反応

    ダス ビスワジット

    提供機関:Japan Society for the Promotion of Science

    制度名:Grants-in-Aid for Scientific Research

    研究種目:Grant-in-Aid for Research Activity Start-up

    研究機関:Tohoku University

    2025年7月31日 ~ 2027年3月31日