21345-13-1Relevant articles and documents
Catalyst-Controlled Regioselective Chlorination of Phenols and Anilines through a Lewis Basic Selenoether Catalyst
Dinh, Andrew N.,Maddox, Sean M.,Vaidya, Sagar D.,Saputra, Mirza A.,Nalbandian, Christopher J.,Gustafson, Jeffrey L.
, p. 13895 - 13905 (2020/11/03)
We report a highly efficient ortho-selective electrophilic chlorination of phenols utilizing a Lewis basic selenoether catalyst. The selenoether catalyst resulted in comparable selectivities to our previously reported bis-thiourea ortho-selective catalyst, with a catalyst loading as low as 1%. The new catalytic system also allowed us to extend this chemistry to obtain excellent ortho-selectivities for unprotected anilines. The selectivities of this reaction are up to >20:1 ortho/para, while the innate selectivities for phenols and anilines are approximately 1:4 ortho/para. A series of preliminary studies revealed that the substrates require a hydrogen-bonding moiety for selectivity.
8-Azabicyclo[3.2.1]octane derivatives
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Page/Page column 8, (2008/06/13)
The present invention relates to a 8-azabicyclo[3.2.1]octane derivative of Formula I, wherein each of the substituents is given the definition as set forth in the specification and claims, or a pharmaceutically acceptable salt thereof or solvate thereof. The present invention also relates to a pharmaceutical composition comprising an 8-azabicyclo[3.2.1]octane derivative in admixture with one or more pharmaceutically acceptable auxiliaries and to the use of the 8-azabicyclo[3.2.1]octane derivative in therapy.