Journal of Fluorine Chemistry p. 59 - 68 (1993)
Update date:2022-08-11
Topics:
Weigert, F. J.
Davis, R. F.
The 2+2 cycloadducts of fluorinated olefins other than tetrafluoroethylene and hydrocarbon dienes also ring-expand and eliminate two moles hydrogen halide to form aromatic products.The hydrogen halide eliminated from chlorofluoroolefin adducts depends on the solid present during the aromatization.Alumina and other accelerators favor elimination of HF, while HCl evolves in the presence of inert solids such as SiC.The aromatics derived from hexafluoropropane adducts generally have the more sterically hindered regiochemistry.Alumina promotes extrusion of difluorocarbene from trifluoromethylcyclobutanes leading to fluorobenzenes rather than benzotrifluorides.Carbon accelerates these aromatizations without difluorocarbene extrusion.
View MoreContact:+86-531-58668191 58668193 58668196 58661173
Address:No 55,Beixiaoxinzhuang West Street,Jinan City, Shandong Province
NINGBO YINZHOU PRECISE COLOR CO.,LTD.
Contact:86-574-88139809 86-574-83033159
Address:Qiming Road,Yinzhou,Ningbo,China
Contact:(1) 206-3550089
Address:5115 NE 8TH PL, Renton, WA 98059 USA
Jinhua City Mingzhu Pharmaceutical Co.,Ltd.
Contact:15857995878 0579-82207761
Address:No.169 Shenze Road, New Area,Jinpan Development Zone, Jinhua
Daicel Chiral Technologies (China)CO.,LTD
Contact:021-5046-0086*8
Address:Part C, FL 5, the 16th Building, No. 69, XiYa Road, WaiGaoQiao Free Trade Zone, Shanghai, 200131, P.R.China
Doi:10.1021/ja00361a015
(1983)Doi:10.1021/ja01859a025
(1940)Doi:10.1134/S1070428017120144
(2017)Doi:10.1134/S1070363216120525
(2016)Doi:10.1055/s-0029-1219542
(2010)Doi:10.1002/ejic.201200248
(2012)