Tetrahedron Letters p. 2225 - 2228 (1981)
Update date:2022-08-04
Topics:
Ollis, W. David
Stephanatou, Julia Stephanidou
Stoddart, J. Fraser
Unal, Gulten G.
Williams, David J.
An X-ray structure analysis shows that the 5,18-dimethyl derivative (5) of the title compound (4) crystallises from xylene as a 1:1 inclusion compound in which the host molecules adopt propeller-like conformations (7 and 7*) with almost perfect C2 symmetry.Dynamic 1H n.m.r. spectroscopy shows that the 5,18-dibenzyl derivative (6) of (4) forms a 1:1 inclusion compound with ethanol in the solid state and undergoes ring inversion (7 <*> 7*) between enantiomeric propeller-like conformations in solution against a barrier of 21.1 kcal/mol.
View MoreShanghai Rich Chemicals Co., Ltd
website:http://www.richchemical.com
Contact:+86-21-20255798
Address:Pudong Shanghai,China
Xuzhou Tianrun Chemical Co.,Ltd
website:http://www.tianrunchem.cn
Contact:86-516-83832636
Address:fuxing road
Onlychem (Jinan)Biotech Co.,Ltd
Contact:86-531-83175885
Address:No. 44, Honglou South Road, Jinan,China
Xi'an Costrong Pharmaceutical Co., Ltd.
Contact:029- 68576496
Address:Room 2004,Shuibao Building,No.190,South Erhuan Rd, Yanta District,Xi'an,Shaan Xi,China
Tianjin Ingenochem Technology Co.,Ltd
Contact:+86-22-23677060
Address:Hitech Green Industry Park K2-9-602, Nankai district
Doi:10.1007/BF00505685
(1981)Doi:10.1021/jo020720j
(2003)Doi:10.1021/jm950872p
(1996)Doi:10.1016/j.tet.2004.07.048
(2004)Doi:10.1021/ol300296k
(2012)Doi:10.1039/c39810000556
(1981)
