Phenol → Phenol, 4,4'-(4-hydroxycyclohexylidene)bis-

HRID 3988

Reaction equation

[C:1]1([OH:14])[CH:6]=[CH:5][C:4]([C:7]2[CH:12]=[CH:11][C:10]([OH:13])=[CH:9][CH:8]=2)=[CH:3][CH:2]=1.[OH:15][CH:16]1[CH2:21][CH2:20][C:19](=O)[CH2:18][CH2:17]1.C1(O)C=CC=CC=1>>[OH:14][C:1]1[CH:2]=[CH:3][C:4]([C:7]2([C:19]3[CH:20]=[CH:21][C:16]([OH:15])=[CH:17][CH:18]=3)[CH2:12][CH2:11][CH:10]([OH:13])[CH2:9][CH2:8]2)=[CH:5][CH:6]=1

Participants

Reactant 3

HCID 996Phenol

HCID 71124,4'-Dihydroxybiphenyl

HCID 5437064-Hydroxycyclohexanone

Product 1

HCID 10731776Phenol, 4,4'-(4-hydroxycyclohexylidene)bis-

Procedure

A process for the preparation of 4,4'-biphenol which comprises reacting 4-hydroxycyclohexanone with phenol in the presence of an acid catalyst to give 4,4-bis(4-hydroxyphenyl)cyclohexanol of the formula (I) ##STR5## and successively subjecting 4,4-bis(4-hydroxyphenyl)cyclohexanol to decomposition and dehydrogenation reactions in the presence of a dehydrogenation catalyst.

Sources & evidence

ORD record: ord-07290cbe3a6d4b7aa78af205e4526201
Source dataset: uspto-grants-1988_02
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04723046

Linked notes

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