The invention provides a substituted benzylaminopiperidine compounds that are useful in the treatment of gastrointestinal disorders; central nervous system (CNS) disorders; inflammatory disease; emesis; urinary incontinence; pain; migraine; sunburn; diseases, disorders and adverse conditions caused by Heliobacter pylori; or angiogenesis, especially CNS disorders in a mammalian subject, especially in humans.
Nickel-Catalyzed Etherification of Phenols and Aryl Halides through Visible-Light-Induced Energy Transfer
作者:Da-Liang Zhu、Shan Jiang、Qi Wu、Hao Wang、Hai-Yan Li、Hong-Xi Li
DOI:10.1021/acs.orglett.1c03066
日期:2021.11.5
arylhalides, the ability of such a Ni-catalyzed transformation employing phenols to diaryl ethers is unsuccessful due to phenolates with much lower reduction potentials, which suppress the oxidation of nickel(II) intermediates into requisite Ni(III) species. We herein report visible-light-initiated, nickel-catalyzed O-arylation of phenols with arylhalides using t-BuNH(i-Pr) as the base and thioxanthen-9-one
尽管在链烷醇和芳基卤化物的镍催化醚化方面取得了一些进展,但由于苯酚盐的还原电位低得多,从而抑制了镍 (II) 中间体氧化成必需的化合物,因此这种使用苯酚的镍催化转化为二芳基醚的能力并不成功Ni(III) 物种。我们在此报告了在可见光下使用t- BuNH( i- Pr) 作为碱和thioxanthen -9-one 作为光敏剂的可见光引发的镍催化苯酚与芳基卤化物的O-芳基化。这种光电耦合表现出广泛的基板范围。
Substituted benzylamino piperidine compounds
申请人:PFIZER INC.
公开号:EP1114817A1
公开(公告)日:2001-07-11
This invention provides a compound of formula (I) and its pharmaceutically acceptable salts
wherein R is halo C1-C8 alkyl, halo C2-C8 alkenyl, halo C2-C8 alkynyl or halo C1-C8 alkyl substituted by hydroxy or C1-C8 alkoxy; R1 is hydrogen, halo or C1-C6 alkoxy; or R and R1, together with two carbon atoms shared between the benzene ring and the R and R1, complete a fused C4-C6 cycloakyl wherein one carbon atom is optionally replaced by oxygen and wherein one or two of the carbon atoms are optionally substituted by up to five substituents selected from halo, C1-C6 alkyl and halo C1-C6 alkyl; X is C1-C6 alkoxy, halo C1-C6 alkoxy, phenoxy or halo; and Ar is phenyl optionally substituted by halo. These compounds are of use in treating a gastrointestinal disorder, a central nervous system (CNS) disorder, an inflammatory disease, emesis, urinary incontinence, pain, migraine, sunburn, diseases, disorders and adverse conditions caused by Helicobacter pylori or an angiogenesis especially CNS disorders in a mammalian subject, especially humans.
Rhodium-Catalyzed Xanthone Formation from 2-Aryloxybenzaldehydes via Cross-Dehydrogenative Coupling (CDC)
作者:Ping Wang、Honghua Rao、Ruimao Hua、Chao-Jun Li
DOI:10.1021/ol203381q
日期:2012.2.3
A concise and straightforward strategy to construct a xanthone skeleton via an intramolecular cross-dehydrogenative coupling (CDC) of 2-aryloxybenzaldehydes has been developed. The reaction proceeded smoothly without any need of preactivation of the aldehyde group. It can tolerate various functional groups and provides an applicable protocol to construct a wide range of xanthone derivatives.