Derivatives of 1-arylsulphonyl-1,5-dihydro-2H-pyrrol-2-one, and
申请人:Roussel Uclaf
公开号:US04885307A1
公开(公告)日:1989-12-05
Compounds useful in the treatment of patients suffering from intellectual or nervous asthenias, memory failures, senescence or mental strain of the formula (I) ##STR1## in which R' represents hydrogen, a linear, branched or cyclic alkyl containing up to 8 carbon atoms, alkenyl containing from 2 to 8 carbon atoms, acyl containing from 1 to 6 carbon atoms or aralkyl containing from 7 to 15 carbon atoms and R represents aryl containing up to 14 carbon atoms, possibly substituted, or a mono- or polycyclic heterocyclic aromatic radical, possibly substituted; also thereapeutic compositions containing those compounds and method of use.
KOSUGI, YOSHIYUKI;HAMAGUCHI, FUMIKO, HETEROCYCLES, 1984, 22, N 10, 2363-2368
作者:KOSUGI, YOSHIYUKI、HAMAGUCHI, FUMIKO
DOI:——
日期:——
US4885307A
申请人:——
公开号:US4885307A
公开(公告)日:1989-12-05
Visible light dye-photosensitised oxidation of pyrroles using a simple LED photoreactor
作者:James K. Howard、Kieran J. Rihak、Christopher J. T. Hyland、Alex C. Bissember、Jason A. Smith
DOI:10.1039/c6ob01719c
日期:——
The photooxidation of pyrrole is typically low yielding due to the absorbance of ultraviolet light, which leads to uncontrolled polymerisation and decomposition. Presented herein is the development of a simple and cost-effective photoreactor utilising Light Emitting Diodes (LEDs) as the light source, and its application to the dye-sensitised oxidation of a range of pyrroles to give corresponding 3-pyrrolin-2-ones
吡咯的光氧化通常由于紫外线的吸收而产率低,这导致不受控制的聚合和分解。本文提出了利用发光二极管(LED)作为光源的简单且成本有效的光反应器的开发,并将其应用于一系列吡咯的染料敏化氧化以产生相应的3-吡咯啉-2-酮。还探讨了该方法在1 O 2生成中的广泛应用。