Pyrrole as a Directing Group: Regioselective Pd(II)-Catalyzed Alkylation and Benzylation at the Benzene Core of 2-Phenylpyrroles
作者:Johannes M. Wahl、Alexander Pöthig、Thorsten Bach
DOI:10.1021/acs.orglett.6b00141
日期:2016.2.19
Pyrrole has been employed for the first time as a directing group in the Pd(II)-catalyzed ortho-functionalization of C(sp2)–Hbonds. A variety of substituted 2-phenylpyrroles were successfully methylated, alkylated, or benzylated in the ortho-position of the benzene ring, yielding the respective 2-substituted pyrrol-2-yl benzenes (36 examples, 51–93% yield). Neither additives nor additional ligands
The present invention provides a production method of a sulfonylpyrrole compound useful as a pharmaceutical product, a production method of an intermediate used for the method, and a novel intermediate. The present invention relates to a method of producing sulfonylpyrrole compound (VIII), which includes reducing compound (III) and hydrolyzing the reduced product to give compound (IV), subjecting compound (IV) to a sulfonylation reaction to give compound (VI), and subjecting compound (VI) to an amination reaction.
5-aryl-1H-pyrrole-3-carbonitrile and a pharmaceutical product using the same
申请人:Takeda Pharmaceutical Company Limited
公开号:US10173977B2
公开(公告)日:2019-01-08
The present invention provides a production method of a sulfonylpyrrole compound useful as a pharmaceutical product, a production method of an intermediate used for the method, and a novel intermediate. The present invention relates to a method of producing sulfonylpyrrole compound (VIII), which includes reducing compound (III) and hydrolyzing the reduced product to give compound (IV), subjecting compound (IV) to a sulfonylation reaction to give compound (VI), and subjecting compound (VI) to an amination reaction.
Intermediates for use in a process of producing pyrrole compounds
申请人:Takeda Pharmaceutical Company Limited
公开号:EP2765130B1
公开(公告)日:2017-07-26
5-ARYL-1H-PYRROLE-3-CARBONITRILE AND A PHARMACEUTICAL PRODUCT USING THE SAME
申请人:Takeda Pharmaceutical Company Limited
公开号:US20190127324A1
公开(公告)日:2019-05-02
The present invention provides a production method of a sulfonylpyrrole compound useful as a pharmaceutical product, a production method of an intermediate used for the method, and a novel intermediate. The present invention relates to a method of producing sulfonylpyrrole compound (VIII), which includes reducing compound (III) and hydrolyzing the reduced product to give compound (IV), subjecting compound (IV) to a sulfonylation reaction to give compound (VI), and subjecting compound (VI) to an amination reaction.