Journal of the Chemical Society. Perkin transactions II p. 1605 - 1608 (1983)
Update date:2022-07-30
Topics:
Maccarone, Emanuele
Perrini, Giancarlo
Second-order rate constants and activation parameters for the methylation of methyl phenyl sulphide and methyl phenyl selenide by dimethyl sulphate have been measured in 14 aprotic solvent covering a wide range of dielectric constants.The same reactivity order is observed with both substrates in the various solvents.The analysis of the medium effects on the reactivity was performed by the Koppel-Palm multi-parameter approach.The results indicate that the polarization and electrophilicity of the solvents are responsible for the rates of both reactions.The higher reactivity of methyl phenyl selenide has been ascribed to the higher polarizability and softness of the selenium atom in comparison with the sulphur atom.
View MoreContact:+86-731-84427351
Address:154 JIANXIANG SOUTH ROAD
Shandong Yubin Chemical CO.,LTD
website:http://www.yukaichem.com/en.html
Contact:+86-536-8865336
Address:binhai economic development zone，262737 shangdong，china
Nanjing Habo Medical Technology Co., Ltd.
Contact:025－85769882
Address:No.108. Ganjiabian east. Qixia District .Nanjing
Suzhou Kangrun Pharmaceutical, Inc
Contact:86-512-63912376，63913329
Address:Building 2, No. 2358 ,Chang'an Rd, Wujiang Economic Development Zone Pioneering park, china
shijiazhuang baisheng chem co.; ltd
Contact:86-0311-80790826
Address:shijiazhuang hebei
Doi:10.1080/10426500490428906
(2004)Doi:10.1007/BF01156273
()Doi:10.1016/0304-4165(72)90336-4
(1972)Doi:10.1039/c6ob02248k
(2016)Doi:10.1039/DT9760002375
()Doi:10.1021/ja042439n
(2005)
