The first highly enantioselective hydrogenation of carbocyclic aromatic amines has been successfully realized using in situ-generated chiral ruthenium complex as catalyst, affording facile access to chiral exocyclic amines with up to 98% ee.
Fluorination of activated aromatic systems with Selectfluor™ F-TEDA-BF4 in ionic liquids
作者:Mohammad Reza Poor Heravi
DOI:10.1016/j.jfluchem.2007.11.006
日期:2008.3
Selectfluor™ was shown to be soluble in ionicliquid, thus allowing the ‘green’ electrophilic fluorination of activated aromatic systems compounds in high chemoselectivity and yields.
Aromatic nitro-compounds. Studies of the amination of 9-nitrophenanthrene and of the mononitrobiphenylenes
作者:J. W. Barton、A. R. Grinham、K. E. Whitaker
DOI:10.1039/j39710001384
日期:——
Nucleophilic aminations of 9-nitrophenanthrene and of 2-nitrobiphenylene have given 9-amino-10-nitrophenanthrene (I; R = NH2) and 2-amino-3-nitrobiphenylene (III; R = NH2) respectively; under the same conditions 1-nitrobiphenylene is unreactive. Some reactions of amines (I; R = NH2) and (III; R = NH2) are described.
9-硝基菲和2-硝基联苯的亲核胺化分别得到9-氨基-10-硝基菲(I; R = NH 2)和2-氨基-3-硝基联苯(III; R = NH 2)。在相同条件下,1-硝基联苯是不反应的。描述了胺(I; R = NH 2)和(III; R = NH 2)的一些反应。
A catalytic activation of bulk chemical nitromethane (MeNO2) enables the facile synthesis of amides and nitriles from ketone, aldehyde, and alkyne substrates. This method eliminates the need for stoichiometric reductants or activators, opening up new possibilities for MeNO2 as a nitrogen source in organicsynthesis.