A thorough investigation of the challenging Pd-catalyzed fluorination of five-membered heteroaryl bromides is presented. Crystallographic studies and density functional theory (DFT) calculations suggest that the challenging step of this transformation is C-F reductive elimination of five-membered heteroaryl fluorides from Pd(II) complexes. On the basis of these studies, we have found that various heteroaryl bromides bearing phenyl groups in the ortho position can be effectively fluorinated under catalytic conditions. Highly activated 2-bromoazoles, such as 8-bromocaffeine, are also viable substrates for this reaction.
Compounds or pharmacologically acceptable salts thereof are provided. In various embodiments the compounds have an antagonistic effect on a neurokinin NK1 receptor, a neurokinin NK2 receptor, and a muscarine M3 receptor. The compounds are useful as therapeutic agents for bronchial asthma, chronic obstructive pulmonary disease, or the like.
[EN] METHODS OF TREATMENT WITH AMINOLEVULINIC ACID SYNTHASE 2 (ALAS2) MODULATORS<br/>[FR] MÉTHODE DE TRAITEMENT À L'AIDE DE MODULATEURS DE L'ACIDE AMINOLÉVULINIQUE SYNTHASE 2 (ALAS2)
申请人:AGIOS PHARMACEUTICALS INC
公开号:WO2020247819A3
公开(公告)日:2021-02-25
BARTON, A. (NEE, BEER);BREUKELMAN, S. P.;KAYE, P. T.;MEAKINS, G. D.;MORGA+, J. CHEM. SOC. PERKIN TRANS., 1982, N 1, 159-164
作者:BARTON, A. (NEE, BEER)、BREUKELMAN, S. P.、KAYE, P. T.、MEAKINS, G. D.、MORGA+
DOI:——
日期:——
In-Depth Assessment of the Palladium-Catalyzed Fluorination of Five-Membered Heteroaryl Bromides
作者:Phillip J. Milner、Yang Yang、Stephen L. Buchwald
DOI:10.1021/acs.organomet.5b00631
日期:2015.10.12
A thorough investigation of the challenging Pd-catalyzed fluorination of five-membered heteroaryl bromides is presented. Crystallographic studies and density functional theory (DFT) calculations suggest that the challenging step of this transformation is C-F reductive elimination of five-membered heteroaryl fluorides from Pd(II) complexes. On the basis of these studies, we have found that various heteroaryl bromides bearing phenyl groups in the ortho position can be effectively fluorinated under catalytic conditions. Highly activated 2-bromoazoles, such as 8-bromocaffeine, are also viable substrates for this reaction.
Barton, Anne; Breukelman, Stephen P.; Kaye, Perry T., Journal of the Chemical Society. Perkin transactions I, 1982, p. 159 - 164
作者:Barton, Anne、Breukelman, Stephen P.、Kaye, Perry T.、Meakins, G. Denis、Morgan, David J.