Investigations into the mechanism of lactamization of lactones yielding in a novel route to biologically active tryptamine derivatives
摘要:
The mechanism of lactamization of corresponding lactones was investigated by means of gas chromatography and synthesis of possible intermediates as references. Lactones react with amines via the amino acid with subsequent elimination of water to the corresponding lactams. In the first step, also hydroxyamides are in equilibrium with the lactones and amines, respectively, which are not able to form the amide though. This mechanism opens a new approach for the synthesis of N-beta-disubstituted tryptamines. (C) 2004 Elsevier Ltd. All rights reserved.
Dual Benzophenone/Copper‐Photocatalyzed Giese‐Type Alkylation of C(sp
<sup>3</sup>
)−H Bonds
作者:Baptiste Abadie、Damien Jardel、Gianluca Pozzi、Patrick Toullec、Jean‐Marc Vincent
DOI:10.1002/chem.201904111
日期:2019.12.13
benzophenone (BP) with a catalytic amount of Cu(OAc)2 . Under mild and operationally simple conditions, the Giese adducts resulting from the C(sp3 )-Hfunctionalization of amines, alcohols, ethers, and cycloalkanes could be synthesized. Preliminary mechanistic studies have revealed that the reaction does not proceed through a radical chain, but through a dual BP/Cu photocatalytic process, in which both CuII
The mechanism of lactamization of corresponding lactones was investigated by means of gas chromatography and synthesis of possible intermediates as references. Lactones react with amines via the amino acid with subsequent elimination of water to the corresponding lactams. In the first step, also hydroxyamides are in equilibrium with the lactones and amines, respectively, which are not able to form the amide though. This mechanism opens a new approach for the synthesis of N-beta-disubstituted tryptamines. (C) 2004 Elsevier Ltd. All rights reserved.