57962-58-0Relevant academic research and scientific papers
α-amination of aldehydes catalyzed by in situ generated hypoiodite
Tian, Jie-Sheng,Ng, Kang Wai Jeffrey,Wong, Jiun-Ru,Loh, Teck-Peng
supporting information, p. 9105 - 9109 (2012/10/29)
The metal-free amination of different aldehydes is catalyzed by hypoiodite, which is generated by employing commercially available sodium percarbonate as the co-oxidant. This approach has several advantages: it is a metal-free oxidation that works under m
Resolution and absolute configuration of some a-aminoacetals: En route to enantiopure N-protected a-aminoaldehydes
Albalat-Serradeil, Muriel,Primazot, Geraldine,Wilhelm, Didier,Vallejos, Jean-Claude,Vanthuyne, Nicolas,Roussel, Christian
, p. 687 - 696 (2012/09/22)
The first successful resolution of rac-a-aminoacetals via diastereoisomeric salt formation with optically pure N-protected aminoacids is reported. The absolute configuration assignment of a-aminoacetal enantiomers is performed by an entirely non-racemizing chemical correlation method involving N-protection and a new efficient hydrolysis step followed by a reduction of the resulting N-protected a-aminoaldehyde intermediates. A racemization method of optically enriched a-aminoacetals is exemplified to allow valorisation of both enantiomers. Springer-Verlag 2011.
PROCESS FOR PREPARING ALPHA AMINOACETALS IN RECEMIC FORM
-
Page/Page column 16, (2010/04/25)
The invention relates to a process for preparing an α-aminoacetal, or addition salts thereof, of formula (I) in recemic form comprising the steps consisting in: reacting a glyoxal monoacetal of formula (II) with an arylalkylamine of formula (III) in such a way as to obtain an imine of formula (IV); adding a Grignard reagent of formula R3-Mg-HaI to said imine of formula (IV) so as to obtain an amine of formula (V), and - deprotecting the amine of formula (V) in such a way as to obtain the compound of formula (I) in racemic form, and, where appropriate, adding an inorganic or organic acid in order to obtain an addition salt of the α-aminoacetal of formula (I).
PROCESS FOR THE PREPARATION OF PRIMARY AMINES
-
Page 23-24, (2010/02/06)
Process for the preparation of primary amines of formula (I): on enclosed where R3 represents an alkyl, cycloalkyl or aralkyl group, by reaction of a triazolium salt of formula (II): (formula see on enclosed paper version) where R1 and R2 represent hydrogen or an alkyl, aralkyl or aryl group, R4 represents an alkyl or aralkyl group or a residue of an organic polymer functionalized by an alkylating group, and A- represents a halogen, alkylsulphonate, arylsulphonate, alkyl sulphate, hydrogensulphate, hemisulphate, perchlorate or hydroxide, with a hydride, in order to obtain an amine of formula (I), which is isolated, if desired, and intermediates.
