149692-49-9Relevant articles and documents
Synthesis method of 3-methylaminopropionic acid
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Paragraph 0008, (2021/01/24)
The invention relates to a synthetic method of 3-methylaminopropionic acid. The method mainly solves the technical problems that the existing method for preparing 3-methylaminopropionic acid has manyreaction steps and is not easy for large-scale productio
Synthesis of 3-(2-aminoethyl)-5-hydroxy-1H-pyrazole derivatives
Groselj, Uros,Kralj, David,Wagger, Jernej,Dahmann, Georg,Stanovnik, Branko,Svete, Jurij
experimental part, p. 49 - 65 (2012/03/11)
Treatment of β-keto ester 8 with hydrazines 9a-g gave 1'-substituted tert-butyl 2-(5-hydroxy-1Hpyrazol- 3-yl)ethylcarbamates 10a-e and 2-(5-oxo-2,5-dihydro-1H-pyrazol-3-yl)ethylcarbamates 11f,g. Acidolytic deprotection of 10b,c afforded the corresponding 3-(2-aminoethyl)-5-hydroxy- 1H-pyrazoles 6b,c in good yields. Acylation of 6 gave either the N-acyl compounds 12b,c and 13c, or the N,O-diacyl derivative 14. Next, three N,N-dialkyl analogues 15a,b and 26c were prepared from dimethyl acetone-1,3-dicarboxylate 21 via condensation with hydrazines 9a and 9h followed by hydrolysis of the esters 22a,b, amidation of the carboxylic acids 23a,b, and reduction of the tertiary carboxamides 24a and 25b,c. ARKAT-USA, Inc.
ARYLOXY-AND HETEROARYLOXY-SUBSTITUTED TETRAHYDROBENZAZEPINES AND USE THEREOF TO BLOCK REUPTAKE OF NOREPINEPHRINE, DOPAMINE, AND SEROTONIN
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Page/Page column 87, (2009/01/20)
The aryloxy- and heteroaryloxy-substituted tetrahydrobenzazepine derivative compounds of the present invention are represented by formulae (I) (A-E) having the following structure where the carbon atom designated * is in the R or S configuration and the s
Cerium(IV) oxidations of β-aminoketones, VIII: Synthesis of 1,2,3,4-tetrahydroisoquinolines with differently substituted piperidine parts
Holzgrabe,Inkman
, p. 209 - 215 (2007/10/02)
1- and 3-Alkyl- and/or aryl substituted tetrahydroisoquinolines are obtained by oxidative cyclisation of N-benzyl-β-aminoketones with cerium(IV) sulphate. In nearly all cases formation of mixtures of diastereomeres is observed. If the ketone function is r