112213-85-1Relevant articles and documents
Substituent Effects on the Populations of Rotational Isomers in 9-(Aryloxymethyl)-1,4-dimethyltriptycenes. Implications for the Presence of CH3...O Hydrogen Bond
Tamura, Yoshio,Yamamoto, Gaku,Oki, Michinori
, p. 1619 - 1622 (1986)
The population ratios +/-sc/ap in 9-(aryloxymethyl)-1,4-dimethyltriptycenes were determined by (1)H NMR spectroscopy.Whereas electron-withdrawing substituents favor the ap rotamer , electron-donating substituents favor the +/-sc rotamer in a relative sens