Journal of Organic Chemistry p. 2840 - 2845 (1993)
Update date:2022-08-04
Topics: Cyclic Lewis Acids Organotin
Vedejs, E.
Erdman, D. E.
Powell, D. R.
The Ph3P=O IR frequency shift method has been used to compare the Lewis acid strength of several cyclic organotin dichlorides.Structures 3, 20, and 4 are relatively weak Lewis acids, less potent than Bu2SnCl2, according to the IR criterion.Steric factors appear largely responsible for the decreased Lewis acidity, altough bond angle strain may also contribute in the case of 3.Introduction of electronegative substituents into the aromatic ring of structures related to 4 results in stronger Lewis acids 8 and 18, both of which are relatively more potent than Ph2SnCl2.Methods for the preparation of precursors to the fluorinated 8 and 18 are described, based on the deprotonation of tetrafluoroaryl precursors.
View MoreContact:+86-13914766747
Address:Floors 21&22, Jin Cheng Tower, No. 216 Middle Longpan Road, Nanjing
Shanghai Yuanding Chem. Sci. & Tech. Co., Ltd.
website:http://www.shydtec.com
Contact:86-21-57721279
Address:Science and Technology Park, Songjiang District, Shanghai, China
Nantong LiKai Chemical Co.,Ltd
Contact:+86-513-89068669
Address:Jincheng Science Park
Shenzhen Sunrising Industry Co., ltd.
Contact:+86 755 86571158 / 86571159 / 86571160
Address:2108 ZHENYE INT. BUSINESS CENTER,NO.3101-90 QIANHAI RD, NANSHAN,SHENZHEN, CHINA
website:http://www.dulynet.com/
Contact:025-84699383 -8003
Address:Room 503, Building 2, Chuangxinhui, No. 61 Wenjing Road, High-tech Development Zone, Pukou District, Nanjing City, Jiangsu Province Nanjing, Jiangsu
Doi:10.1021/ja0524043
(2005)Doi:10.1080/00397911.2013.813545
(2014)Doi:10.1016/j.tetlet.2009.10.111
(2010)Doi:10.1016/0223-5234(92)90032-V
(1992)Doi:10.1016/S0040-4039(00)72336-7
(1975)Doi:10.1039/c39930000617
(1993)
