Arylethanolamine derivatives, their preparation and use in
申请人:Beecham Group p.l.c.
公开号:US04588749A1
公开(公告)日:1986-05-13
Compounds of formula (II): ##STR1## or a pharmaceutically acceptable salt thereof, in which X is an oxygen atom or a bond, R.sup.1 is a hydrogen, fluorine, chlorine or bromine atom or a trifluoromethyl or C.sub.1-4 alkyl group, each of R.sup.2 and R.sup.3 is a hydrogen atom or a C.sub.1-4 alkyl group, R.sup.4 is a C.sub.1-4 alkyl group, R.sup.5 is a hydrogen atom or a C.sub.1-4 alkyl group, and n is an integer of from 1 to 3; are useful as anti-obesity and/or anti-hyperglycaemic agents.
Carbon Dioxide-Mediated C(sp<sup>3</sup>)–H Arylation of Amine Substrates
作者:Mohit Kapoor、Daniel Liu、Michael C. Young
DOI:10.1021/jacs.8b05061
日期:2018.6.6
Elaborating amines via C-H functionalization has been an important area of research over the past decade but has generally relied on an added directing group or sterically hindered amine approach. Since free-amine-directed C(sp3)-H activation is still primarily limited to cyclization reactions and to improve the sustainability and reaction scope of amine-based C-H activation, we present a strategy
Native amine-directed site-selective C(sp3)-H arylation of primary aliphatic amines with aryl iodides
作者:Pranab K. Pramanick、Zhibing Zhou、Zhenlin Hou、Yufei Ao、Bo Yao
DOI:10.1016/j.cclet.2019.10.034
日期:2020.5
N-unprotected aliphaticamines represents one of the most efficient and straightforward strategies for amine synthesis. Despite some recent progress in this field, the NH2-directed γ-C(sp3)-H arylation of primaryaliphaticamines except α-amino esters remained an unmet challenge. In this report, we established a simple and efficient method for site-selective C(sp3)-H arylation of primaryaliphaticamines by aryl
Site-selective C–H arylation of primary aliphatic amines enabled by a catalytic transient directing group
作者:Yongbing Liu、Haibo Ge
DOI:10.1038/nchem.2606
日期:2017.1
functionalization of aliphaticamines is of great importance in organic and medicinal chemistry research. Several methods have been developed for the direct sp3 C–H functionalization of secondary and tertiary aliphaticamines, but site-selective functionalization of primaryaliphaticamines in remote positions remains a challenge. Here, we report the direct, highly site-selective γ-arylation of primary alkylamines
Carbon Dioxide as a Directing Group for C-H Functionalization Reactions Involving Lewis Basic Amines, Alcohols, Thiols, and Phosphines for the Synthesis of Compounds
申请人:The University of Toledo
公开号:US20190185392A1
公开(公告)日:2019-06-20
Methods of synthesizing compounds using CO
2
as a directing group for C—H functionalization, and compounds made thereby, are described.