LEIGHC. ANDERSON AND W. A. F I S ~ R
594
[CONTRIBUTION FROM THE CHEMISTRY
Vol. 66
LABORATORY OF THE UNIVERSITY OF MICHIGAN]
Quinoidation of Triaryl Compounds-Hydroxybiphenyldiarylmethyl Cations BY LEIGHC. ANDERSONAND W. A. FISHER Data have been presented from this Laboratory on the preparation and absorption spectra of p-hydroxyphenylbiphenylcarbinols. This paper discusses investigations which have been made on biphenylcarbinols in which a hydroxyl or methoxyl group has been substituted on the terminal carbon of the biphenyl group in order to obtain data on the biphenoquinone type of structure. Two types of carbinols were used in this investigation : methoxy or hydroxyphenyldiarylcarbinols illustrated by 1 and methoxy or hydroxybiphenyldiarylcarbinols illustrated by I1 where the aryl groups R and R’ are either phenyl or para-biphenyl groups. The absorption spectra ( IH
CH,O
