1421341-06-1Relevant academic research and scientific papers
Rhodium-catalyzed intermolecular C-H silylation of arenes with high steric regiocontrol
Chen, Cheng,Hartwig, John F.
, p. 853 - 857 (2014/03/21)
Regioselective C-H functionalization of arenes has widespread applications in synthetic chemistry. The regioselectivity of these reactions is often controlled by directing groups or steric hindrance ortho to a potential reaction site. Here, we report a catalytic intermolecular C-H silylation of unactivated arenes that manifests very high regioselectivity through steric effects of substituents meta to a potential site of reactivity. The silyl moiety can be further functionalized under mild conditions but is also inert toward many common organic transformations, rendering the silylarene products useful building blocks. The remote steric effect that we observe results from the steric properties of both the rhodium catalyst and the silane.
SUBSTITUTED QUINOLINES AND THEIR USE AS MEDICAMENTS
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Page/Page column 64, (2013/03/26)
The invention relates to new substituted quinolines of formula (1) wherein R1 is a linear or branched C1-6-alkyl, wherein R1 may optionally be substituted by R3 which is selected from the group consisting of a three-, four-, five-, six- or seven-membered cycloalkl; a five-, six- or seven-membered, saturated heterocycle comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; and a five- or six-membered heteroaryl comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; wherein R3 may optionally be substituted further substituted as defined in claim 1 and wherein R2 is selected from the group consisting of halogen, phenyl, a five- or six-membered monocyclic heteroaryl comprising one, two or three heteroatoms each independently selected from the group consisting of N, S and O; a bicyclic, nine-, ten- or eleven-membered, either aromatic or non-aromatic, but not fully saturated heterocycle comprising one, two, three or four heteroatoms each independently selected from the group consisting of N, S and O; wherein R2 may optionally be further substituted as defined in claim 1, and their use in the preparation of medicaments for the treatment of disease such as asthma, COPD, allergic rhinitis, allergic dermatitis and rheumatoid arthritis.
Substituted Quinolines and Their Use As Medicaments
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Paragraph 0226, (2013/03/26)
Disclosed are substituted quinolines of formula 1 wherein R1 and R2 are defined herein, the processing of making and using the same.
