93782-07-1Relevant articles and documents
Efficient synthesis of α-amino secondary amides by direct aminocarbonylation of N-Boc-imines using carbamoylsilane as an amide source
Chen, Jianxin,Guo, Qilin,Zhao, Minggang
, (2020)
A novel and practical procedure for the preparation of α-amino secondary amides by the aminocarbonylation of N-Boc-imines using carbamoylsilanes bearing methoxymethyl group as secondary amides source is presented herein. The protocol tolerates N-Boc-imines bearing different groups, including aryl, double bond conjugated aryl, heteroaryl and aliphatic groups. The reactions provide good to excellent yields of the products under mild and catalysts-free conditions. The electronic property and the steric hindrance of substituent on the N-Boc-imines affect the reaction.
A Concise Enantiodivergent Synthesis of Equol
Uemura, Takahito,Saito, Yusuke,Sonoda, Motohiro,Tanimori, Shinji
, p. 693 - 696 (2020/12/23)
Equol, a nonsteroidal estrogen produced from the metabolism of the isoflavonoid phytoestrogen daidzein, has been synthesized as both enantioenriched forms based on MacMillan's α-Arylation of carbonyl compound mediated by amino acid derived indazolidinones and copper precatalysts. The natural form of (S)-equol and its enantiomer (R)-equol have been synthesized in 8 steps from 2,4-dimethoxybenzaldehyde with good enantiomeric purity (90% ee and 90% ee, respectively).
The asymmetric reduction of imidazolinones with trichlorosilane
Wagner, Christian,Kotthaus, Andreas F.,Kirsch, Stefan F.
supporting information, p. 4513 - 4516 (2017/04/26)
It is shown how imidazolinones are reduced by trichlorosilane in a highly enantioselective fashion when treated with a novel Lewis base organocatalyst that is based on a 2,2′-bispyrrolidine core. Under mild reaction conditions and with low catalyst loading the hydrosilylation reaction provides a broad range of chiral imidazolidinones with various structural motifs including sterically demanding substituents, alkyls and aryls.
Asymmetric synthesis of 4-aryl-1,2,5-thiadiazolidin-3-one 1,1-dioxides via Pd-catalyzed hydrogenation of cyclic ketimines
Zhu, Zhou-Hao,Chen, Meng-Lin,Jiang, Guo-Fang
supporting information, p. 1325 - 1328 (2017/02/15)
An efficient access to optically active sulfahydantoins, 4-aryl-1,2,5-thiadiazolidin-3-one 1,1-dioxides, was developed through palladium-catalyzed asymmetric hydrogenation of the corresponding cyclic N-sulfonylketimines with up to 98% ee.
INTERMEDIATE COMPOUNDS FOR THE PREPARATION OF MIRTAZAPINE AND THE PRODUCTION METHODS THEREOF
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Page 6, (2008/06/13)
Intermediate compounds for the preparation of mirtazapine and obtention methods thereof. A method is described for obtaining (±)-3-phenyl-1-methylpiperazine, an important intermediate for obtaining mirtazapine, which is based on imposing a cyclation reaction, in the presence of a reducing agent, on new compounds of general formula (I) in which Z is a leaving group capable of undergoing a nucleophylic displacement. A method is also described for obtaining the new compounds of formula (I).
Effect of structural modification of the hydrantoin ring on anticonvulsant activity
Cortes,Liao,Watson,Kohn
, p. 601 - 606 (2007/10/02)
Selectively substituted hydantoins (15 examples), 4-hydroxy-2-imidazolidinones (13 examples), 2-imidazolones (10 examples), 2-imidazolidinones (four examples), vicinal diamines (two examples), and simple amino acid derivatives (four examples) have been pr