1119238-24-2Relevant articles and documents
Proline catalyzed sequential α-aminooxylation or -amination/reductive cyclization of o-nitrohydrocinnamaldehydes: A high yield synthesis of chiral 3-substituted tetrahydroquinolines
Rawat, Varun,Kumar, B. Senthil,Sudalai, Arumugam
, p. 3608 - 3611 (2013)
A new sequential organocatalytic method for the synthesis of chiral 3-substituted (X = OH, NH2) tetrahydroquinoline derivatives (THQs) [ee up to 99%, yield up to 87%] based on α-aminooxylation or -amination followed by reductive cyclization of o-nitrohydrocinnamaldehydes has been described. This methodology has been efficiently demonstrated in the synthesis of two important bioactive molecules namely (-)-sumanirole (96% ee) and 1-[(S)-3-(dimethylamino)-3,4-dihydro-6,7-dimethoxy-quinolin-1(2H)-yl]propanone (92% ee). The Royal Society of Chemistry 2013.
Enantioselective Synthesis of Boryl Tetrahydroquinolines via Cu-Catalyzed Hydroboration
Kong, Duanyang,Han, Suna,Zi, Guofu,Hou, Guohua,Zhang, Jiaxin
, p. 1924 - 1932 (2018)
A Cu-catalyzed regio- and enantioselective hydroboration of 1,2-dihydroquinolines with high yields and excellent enantioselectivities (up to 98% ee) was presented. This method could be applied in the asymmetric synthesis of the important intermediates used in the enantioselective synthesis of the potential agent Sumanirole for the treatment of Parkinson's disease and of the potentially interesting positive inotropic agent (S)-903.
A PROCESS FOR SYNTHESIS OF CHIRAL 3-SUBSTITUTED TETRAHYDROQUINOLINE DERIVATIVES
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Page/Page column 25-26, (2013/10/08)
The present invention relates to novel and concise process for the construction of chiral 3-substituted tetrahydroquinoline derivatives based on proline catalyzed asymmetric α-functionalization of aldehyde, followed by in situ reductive cyclization of nitro group under catalytic hydrogenation condition with high optical purities. Further the invention relates to conversion of derived chiral 3-substituted tetrahydroquinoline derivatives into therapeutic agents namely (-)-sumanirole (96% ee) and 1-[(S)-3-(dimethylamino)-3,4-dihydro-6,7-dimethoxy-quinolin-1(2H)-yl]propanone[(S)-903] (92% ee).