Exploiting the dual role of ethynylbenziodoxolones in gold-catalyzed C(sp)–C(sp) cross-coupling reactions
作者:Somsuvra Banerjee、Nitin T. Patil
DOI:10.1039/c7cc04283c
日期:——
Reported herein is the gold-catalyzed alkynylation of terminal alkynes using ethynylbenziodoxolones (EBXs), where EBXs serve a dual role as oxidants as well as alkyne transfer agents to access unsymmetrical 1,3-diynes. Hence, the catalytic system requires no externaloxidants and is compatible with a broad range of substrates, including those with polar functional groups such as NH, OH and B(OH)2.
Stereoselective Synthesis of Pyrroloisoindolone and Pyridoisoindolone via aza-Prins Cyclization of Endocyclic <i>N</i>-Acyliminium Ions
作者:Malay Das、Anil K. Saikia
DOI:10.1021/acs.joc.8b00440
日期:2018.6.1
A simple methodology has been developed for the synthesis of substituted pyrroloisoindolone and pyridoisoindolone via aza-Prinscyclization of endocyclic N-acyliminium ions, which are derived from the triflic acid treatment of regioselectively reduced N-homopropargyl imides in excellent yields. The reaction is highly diastereoselective, and only one diastereoisomer is formed during the reaction. The
In(OTf)<sub>3</sub>-Catalyzed One-Pot Tandem Mannich and Conia-Ene Cyclization Reaction of <i>N</i>-Propargyl Amido Alcohols with 1,3-Dicarbonyl Compounds: An Approach To Construct Tetrahydro-1<i>H</i>-pyrrolo[2,1-<i>a</i>]isoindolone-1,1-dicarboxylate and Its Application
作者:Archana Kumari Sahu、Ramanjaneyulu Unnava、Sudip Shit、Anil K. Saikia
DOI:10.1021/acs.joc.9b02686
日期:2020.2.21
A one-pottandemreaction has been developed for the synthesis of substituted tetrahydropyrroloisoindolone via Mannich reaction of N-propargyl amido alcohols with 1,3-dicarbonyl compounds followed by Conia-ene cyclization reaction in moderate to good yields catalyzed by indium(III)triflate [In(OTf)3]. The reaction is highly regioselective with an exo-cyclic double bond in the pyrrolidinering. The
One-Pot Hydroxy Group Activation/Carbon-Carbon Bond Forming Sequence Using a Brønsted Base/Brønsted Acid System
作者:Alice Devineau、Guillaume Pousse、Catherine Taillier、Jérôme Blanchet、Jacques Rouden、Vincent Dalla
DOI:10.1002/adsc.201000602
日期:2010.11.22
distinct feature of the trichloroacetimidate group allows use of weaker acid catalysts such as 1,1′-bi-2-naphthol (BINOL)-derived phosphoric acid, pointing out the possible development of an enantioselective variant. This unprecedented sequential one-potBrønsted base-Brønsted acid catalysis further expands the synthetic scope of the trichloroacetimidate group.
Process for the preparation of rucaparib and novel synthesis intermediates
申请人:Advitech Advisory and Technologies SA
公开号:US11220507B2
公开(公告)日:2022-01-11
The present invention relates to a process for the preparation of rucaparib; the invention also refers to novel intermediates of synthesis as well as their use in the preparation of i.a. rucaparib.