85702-70-1Relevant articles and documents
Nickel/Photo-Cocatalyzed Asymmetric Acyl-Carbamoylation of Alkenes
Fan, Pei,Lan, Yun,Zhang, Chang,Wang, Chuan
supporting information, p. 2180 - 2186 (2020/03/03)
An unprecedented asymmetric acyl-carbamoylation of pendant alkenes tethered on aryl carbamic chlorides with both aliphatic and aromatic aldehydes has been developed via the cooperative catalysis of a chiral nickel-PHOX complex and tetrabutylammonium decatungstate. This reaction represents the first example of merging hydrogen-atom-transfer photochemistry and asymmetric transition metal catalysis in difunctionalization of alkenes. Using this protocol, a variety of oxindoles bearing a challenging quaternary stereogenic center are furnished under mild conditions in highly enantioselective manner.
A NEW SYNTHESIS OF 4-AMINO-2-QUINOLINONES
Bergman, Jan,Brynolf, Anna,Vuorinen, Eino
, p. 3689 - 3696 (2007/10/02)
Addition of Grignard or organolithium reagents to N-(α-haloacyl)-N-alkylsubstituted anthranilonitriles (e.g.N-(2-bromopropionyl)-N-methyl-2-cyanoaniline)induced anion formation followed by cyclization to 4-amino-2-quinolinones (e.g. 4-amino-1,3-dimethyl-2-quinolinone (10)).Substrates lacking α-hydrogen atoms, such as N-α-bromoisobutyryl)-2-cyanoaniline, also yielded 3,3-dimethylquinolinedione (9b) by cyclization.In these cases the initial step is a halogen-metal exchange reaction.