Silver-Catalyzed Trifluoromethoxylation of Alkyl Trifluoroborates
作者:Xiaohuan Jiang、Pingping Tang
DOI:10.1021/acs.orglett.0c01741
日期:2020.7.2
A silver-catalyzed trifluoromethoxylation of alkyl trifluoroborates with trifluoromethyl arylsulfonate as the trifluoromethoxylation reagent has been reported for the first time. This reaction is performed under mild reaction conditions and has wide functional group compatibility. In addition, the mechanism of this site-specific trifluoromethoxylation is proposed as a radical pathway.
METHOD FOR PRODUCING QUINOLIN-4(1H)-ONE DERIVATIVE
申请人:NIPPON KAYAKU CO., LTD.
公开号:US20210070710A1
公开(公告)日:2021-03-11
[Problem] The present invention provides a method for producing and isolating a target quinolone derivative using general industrial facilities with high purity.
[Solving means] The present invention also provides a method for producing a quinolone derivative, the method including reacting a ketone with an anthranilic acid derivative using an aluminum halide and removing the aluminum halide under basic conditions.
A (fluor)ry of activity: The transfer of an intact trifluoromethyl group from a hypervalent iodine reagent to an aliphatic alcohol occurs smoothly upon activation by zinc bis(triflimide). This constitutes a straightforward method for the preparation of trifluoromethoxy alkyl derivatives, compounds otherwise difficult to access.
direct trifluoromethylation of a variety of aliphatic alcohols using a hypervalent iodosulfoximine reagent afforded the corresponding ethers in moderate to good yields (14–72 %). Primary, secondary, and even tertiary alcohols, including examples derived from natural products, underwent this transformation in the presence of catalytic amounts of zinc bis(triflimide). Typical reaction conditions involved
BENZIMIDAZOLES WHICH HAVE ACTIVITY AT M1 RECEPTOR AND THEIR USES IN MEDICINE
申请人:COOPER David Gwyn
公开号:US20120041028A1
公开(公告)日:2012-02-16
Compounds of formula (I), salts and solvates are provided:
Uses of the compounds for therapy, for example in the treatment of psychotic disorders and cognitive impairment, are also disclosed.