Journal of Organometallic Chemistry p. 249 - 260 (1980)
Update date:2022-08-30
Topics:
Fraenkel, Gideon
Geckle, Michael J.
Kaylo, Allan
Estes, Don W.
The 1/1/ adduct of t-butyllithium and α-methylstyrene (II) has been generated in cyclopentane in the presence of a variety of ether and t-amine ligands as well as unsolvated, giving stable solutions in every case.NMR spectra of the solvated species are the same for all ligands but differ from that of the unsolvated compound.The results are consistent with a salt which contains a conjugated t-benzylic anion and exists as a loose ion-pair in the presence of ligands and as a tight ion-pair in cyclopentane alone.In contrast, benzyllithium behaves like a tight ion-pair in the presence of all ligands tried.Steric hindrance to tight ion-pairing at Cα of II is concluded to be responsible for the results observed.A covalently-bonded dilithium compound, 4,4-dimethyl-2-lithio-2-(p-lithio-phenyl)pentane has been generated.
View More
Rudong Zhenfeng Yiyang Chemical Co., Ltd.
Contact:0513-84573047
Address:South Fengli Town, Rudong County, Jiangsu Province, China
Nanjing Capatue Chemical Co., Ltd
Contact:+86-25-86371192 +86-025-85720158
Address:No.20 Jiangjun Avenue, Jiangning Economic & Technical Development Zone
Contact:+86-532-80762375
Address:No. 6, Hongkong Middle Road, Qingdao, China
Hangzhou GreenCo Science & Technology Co., Ltd.
Contact:86-571-88257303
Address:1713 Room,Jingui Building,Gudun Road,Xihu District,Hangzhou,China
Shanghai Sinofluoro Scientific Co., Ltd
Contact:+86-21-64279360
Address:Room 1006,Building 3,#58 East Xinjian Road, Shanghai ,201100,China,
Doi:10.1021/acs.jmedchem.8b00733
(2018)Doi:10.1021/jm00318a017
(1967)Doi:10.1039/c8sc00008e
(2018)Doi:10.1021/jo402799t
(2014)Doi:10.1016/j.tetlet.2015.10.068
(2015)Doi:10.1016/S0022-1139(00)85108-8
(1985)
