Un anion β-acyle masque dans les reactions d'acylation: Le derive lithie du dioxolanne du levulate de trimethylsilyle
作者:Jean-Louis Moreau、René Couffignal
DOI:10.1016/0022-328x(85)87462-3
日期:1985.10
An organolithium reagent derived from trimethylsilyl-4,4-ethylenedioxypentanoate reacts with mixed carboxylic-carbonic anhydrides as a homoenolateanion equivalent. Several monoethylene acetals of 1,4-diketones and the corresponding diketones are synthesized by this way.
A simple route to α-aminoketones and related derivatives by dianion acylation reactions; an improved preparation of δ-aminolevulinic acid
作者:David A. Evans、Philip J. Sidebottom
DOI:10.1039/c39780000753
日期:——
Acylation of the dianion (1) derived from ethylhippurate (2) using anhydrides, followed by acid hydrolysis, provides a general route to α-aminoketones; a short and convenient preparation of the porphyrin precursor δ-aminolevulinic acid (as the hydrochloride) by the foregoing procedure is described.