
Journal of the Chinese Chemical Society p. 795 - 800 (2001)
Update date:2022-07-30
Topics:
Fandy, Ragab F.
Abbas, Hessan H.
Al-Hussaini, Ayman S.
Hammam, Ahmed S.
Cycloaddition reaction of 2-aryl-1,4-benzoquinones 1a-d with a number of different dienes, namely 2,3-dimethylbutadiene; 1,4-diphenylbutadiene and anthracene yield 2-aryl-6,7-dimethyl-1,4-naphthoquinones 3a,b; 2,5,8-triphenyl-1,4-naphthoquinone 4 and 2-aryl-1,4,9,10-tetrahydro-9,10-o-benzoanthracene-1,4-dione 5, respectively were investigated. In addition, the cycloaddition reaction of 2-aryl-1,4-benzoquinones 1d,e with 2,3-dimethylbutadiene was also investigated to yield 2-aryl-5,8-dihydro-6,7-dimethyl-1,4-naphthohydroquinones 2a,b. Cyclocondensation reactions of Diels-Alder adducts 2b, 3b, 5a with ethylenediamine, o-substituted primary aromatic amines gave quinoxaline, phenazine, phenoxazine and phenothiazine ocyclic derivatives 6-14.
View MoreShantou Baokang Pharmaceutical Co., Ltd.
Contact:+86-754-88873487
Address:5/F B Block Huangshan Bldg Huangshan Rd Shantou
Wuhan Chemchemical Co., Ltd.(expird)
Contact:15973022782
Address:7-5-6218,Incubation Centre,Guandong Industry Park, East Lake High-Tech Development Zone,Wuhan City.
Haitong Chemical Industrial Co.,Ltd.
website:https://www.haitonglongwin.com/
Contact:+86-022-66221018
Address:18-701, No.99, The 4th Street, TEDA,
Chemieliva Pharmaceutical Co., Ltd.
website:http://www.chemieliva.com
Contact:+86-23-67770219
Address:99 Longhua Road, Yubei District, 401147, Chongqing, China Email: sales@chemieliva.com Tel:0086-23-67770219 Fax: 0086-23-67770220 Attn: Andy Huang
JiangXi Keyuan Biopharma Co., LTD.
Contact:+86-563-6833666
Address:Guangde Fine Chemical Zone, Anhui Province, China
Doi:10.1055/s-2001-16072
(2001)Doi:10.1007/BF01538564
(1932)Doi:10.1021/ja01849a008
(1941)Doi:10.1021/ja00764a063
(1972)Doi:10.1021/ja01150a029
(1951)Doi:10.1248/cpb.36.582
(1988)