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 MoreAnhui Dexinjia Biopharm Co., Ltd
Contact:+86-531-82375818
Address:9 Hexie Road, kaifaqu, Taihe
Shanghai Standard Biotech Co., Ltd.
Contact:+86-18502101150
Address:Room 103, Building 2nd, NO.720, Cailun Road , Pudong District, Shanghai, China
Weifang Adde Economic And Trade Co.,LTD.
Contact:86-536-8885548
Address:Room 1402,Wanda Plaza B Block,No.958,Yuanfei Road,Kuiwen District
Shanghai Balmxy Pharmaceutical Co., Ltd
Contact:0086-21-24206007
Address:Room 402, 15#, No. 909 wangyue Road, shanghai, P. R. China
Contact:18710867521(wechat)
Address:Rm10516,Galaxy Tech Building #2,No.25 Tangyan Rd,Hi-Tech Zone,Xi'an, China
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)
