Journal of the American Chemical Society p. 3150 - 3152 (1982)
Update date:2022-08-10
Topics:
Noble, W.J. le
Brower, K.R.
Brower, C.
Chang, Shoumo
The effect of pressure on the rate of aromatization of hexamethyl(Dewar benzene) (1a) has been remeasured, and that of the parent Dewar benzene (1b) has been determined for the first time.The results for the former reaction in bromobenzene at 140 deg C indicate that the activation volume is -(12+/-3) cm3/mol, and that for the latter in pyridine at 42.1 deg C is +(5+/-2) cm3/mol.This difference between the two reactions is attributed to the efficient packing of the methyl groups as they undergo gear engagement on the way to hexamethylbenzene (2a); the overall react tion volume in the reaction of 1a is -22 cm3/mol.This conversion is also subject to an induced side reaction which is held responsible for an earlier overstimate of the volume reduction.
View MoreBaoding City Light Industry And Textiles Imp.& Exp. Corp. Chemical Department.
Contact:86-312-3262436
Address:NO.658 CHAOYANG SOUTH STREET,BAODING CITY HEBEI CHINA
Contact:86-574-26865651
Address:529 YuanBaoShan Road, Beilun District
Contact:+86-27-87204219, +86-27-87215023
Address:2402, HuiGu Space-time Building, 8 Forest Road, East Lake Hi-Tech Development Zone
Weifang Arylchem Chemical Co., LTD
Contact:86-536-5217866
Address:Development Zone, Shouguang, Shandong Province
website:http://www.antimex.com
Contact:0086-21-50563169
Address:Room1027,No.Jinyu Road,Pudong
Doi:10.1042/bj1361039
(1973)Doi:10.1016/S0960-894X(97)10111-1
(1997)Doi:10.1021/ja01115a508
(1953)Doi:10.1016/j.carres.2020.108129
(2020)Doi:10.1021/jacs.9b06319
(2019)Doi:10.1248/cpb.c15-00047
(2015)