The Chemistry of<i>N</i>-Substituted Benzotriazoles Part 23. Synthesis of Tertiary α-Amino Esters
作者:Alan R. Katritzky、Laszlo Urogdi、Annie Mayence
DOI:10.1055/s-1989-27244
日期:——
2-Dialkylaminoalkanoic esters 6 are prepared in good yield by the reaction of organozinc derivatives 5 with dialkylamino(1-benzo-triazolyl)acetic esters 4, obtained from the condensation of secondary amines 3 with ethyl glyoxylate 2 and benzotriazole (1).
KATRIZKY, ALAN R.;UROGDI, LASZLO;MAYENCE, ANNIE, SYNTHESIS,(1989) N, C. 323-327
作者:KATRIZKY, ALAN R.、UROGDI, LASZLO、MAYENCE, ANNIE
DOI:——
日期:——
Direct Aminoalkylation of α-Branched Aldehydes with in situ Generated Glycine Cation Equivalents
作者:Nikolaus Risch、Stefan Piper
DOI:10.1055/s-2004-829536
日期:——
The efficient synthesis of β-formyl-α-aminocarboxylates 4 by direct aminoalkylation of aldehydes with in situ generated ternaryiminiumsalts from inexpensive starting materials is described. These compounds are easily transformed into α-amino-β,β-dialkyl-γ-butyrolactones 10 and a,a-dialkyl-β-dialkylamino-butane-1,4-diols 11 and can be used as versatile building blocks.