Journal of Organic Chemistry p. 6027 - 6033 (1991)
Update date:2022-09-26
Topics:
Byun, Young-Seok
Lightner, David A.
2,3,7,8-Tetramethyl-(10H)-dipyrrin-1-one-9-carboxylic acid and p-(dimethylamino)benzoic acid are reacted separately with (1R,2R)-cyclohexanediol to form the corresponding diesters (1 and 3, respectively).These diesters exhibit intense bisignate circular dichroism (CD) spectra characteristic of exciton coupling and show a negative exciton chirality: Δεmax408 -122.5, Δεmax360 +95 (1 in CH2Cl2) and Δεmax318 -88.5 , Δεmax292 +41.5 (3 in CH2Cl2).In (CH3)2SO solvent the Cotton effect signs become inverted for the bis(dipyrrinone ester) but remain unchanged for the bis
Shenyang NovPharm Technology Co., Ltd.
Contact:.+86-24-24165786
Address:Room 306, Hongjin Mansion, No. 36-1, Wanliutang Rd., Shenhe District, Shenyang, Liaoning, P.R.C.
RongCheng K&S Chemical Co.,Ltd
Contact:0631-7336369
Address:rongcheng ,shandong province china
Shangyu Sanhechemicals Co.,LTD.
Contact:86-0571-56696839
Address:Num.2952,Nanhuan Road,Binjiang District,Hangzhou,China
Zhengzhou Minzhong Pharmaceutical Co.,ltd
Contact:0086-371-65797115
Address:15/F,Jiangshan Bldg, NO.126 Huanghe Road,Zhengzhou, China
Hefei EnliPharma Tecnology Co.,Ltd
Contact:0086-551-66399836
Address:Qing Cheng ShuiXiang Building 805, Mengcheng North Road , ShuangFeng Economic Development Zone Anhui HeFei
Doi:10.1002/ejoc.201101091
(2011)Doi:10.1016/j.bmcl.2016.11.042
(2017)Doi:10.1055/s-0030-1258227
(2010)Doi:10.1016/j.tetlet.2010.11.003
(2011)Doi:10.1016/j.tetlet.2010.11.025
(2011)Doi:10.1002/anie.202104092
(2021)
