Journal fur Praktische Chemie - Chemiker-Zeitung p. 596 - 601 (1994)
Update date:2022-08-04
Topics:
Kappe, Thomas
Aigner, Rudolf
Hohengassner, Peter
Stadlbauer, Wolfgang
3-Acyl-4-hydroxy-2(1H)-quinolones 5 are obtained by hydrolytic ring opening and subsequent decarboxylation from the corresponding pyrano<3,2-c>quinolin-2,5(6H)-diones 4, which in turn are easily obtained from 1:2 condensation of of anilines 1 with diethyl malonate 2a or 1:1 condensation of diethyl alkyl- or arylmalonates 2b-e with 4-hydroxy-2(1H)-quinolones 3.Nitropyranoquinolinediones 6 furnish after ringopening 3-nitroacetyl-4-hydroxy-2(1H)-quinolones 8.Pyranoquinolines 7 and 9 with acetyl- or aminosubstituents are hydrolyzed during basic ringopening to yield 5.
View MoreHangzhou Showland Technology Co., Ltd.
Contact:86-571-88920516
Address:ROOM2118,NO.553,WENSAN ROAD,HANGZHOU,CHINA
Beijing Apis Biotechnology Co., Ltd.
Contact:86-010-67856775-8551
Address:NO.4PUHUANGYU ROAD,FENTAI DISTRICT, BEIJING, CHINA
Jiangsu Zenji Pharmaceuticals LTD
Contact:+86-025-83172562; +1-224-888-1133(USA)
Address:No.5 Xinmofan Road
website:http://www.oceanchem-group.com
Contact:86-536-8596048
Address:9th floor,Building B future Plaza, No.88.Fenghuang Street,Weifang,Shandong,China
Contact:13120882795;+86-21-34621078;+86-021-31122318
Address:Suite 2,No.2715 Longwu Road
Doi:10.1021/jo500740w
(2014)Doi:10.1002/adsc.201900221
(2019)Doi:10.1039/c4ob00570h
(2014)Doi:10.1002/chem.201402128
(2014)Doi:10.1016/0040-4039(94)02180-J
(1995)Doi:10.1080/10426507.2013.855774
(2014)