Fluorene compounds
AssigneePhillips Petroleum Company
InventorsHelmut G. Alt, Syriac J. Palackal
Life of this patent
Estimating the term…
Abstract
New fluorene derivatives and new methods for forming fluorene derivatives are disclosed. Examples include processes for preparing tert-butyl substituted fluorenes, 1-methyl fluorene, and 4-methyl fluorene.
Claims8
A method for preparing 1- methyl fluorene from fluoranthene comprising reacting fluoranthene with H.sub.2 O.sub.2 and acetic acid under suitable conditions to produce 1-carboxylic acid fluorenone, then reacting said 1-carboxylic acid fluorenone with LiAlH.sub.4 and AlCl.sub.3 under suitable reaction conditions to produce 1- hydroxymethyl fluorenone, and then reducing said 1-hydroxymethyl fluorenone with hydrogen in the presence of a palladium carbon catalyst under suitable conditions to produce said 1- methyl fluorene.
A method for preparing 1-methyl fluorene from fluoranthene comprising reacting said fluoranthene with H.sub.2 O.sub.2 and acetic acid under suitable conditions to produce 1- carboxylic acid fluorenone, then reacting said 1- carboxylic acid fluorenone with hydrogen in the presence of a palladium carbon catalyst under suitable conditions to produce 1-carboxylic acid fluorene, and then reacting said 1-carboxylic acid fluorene with LiAlH.sub.4 and AlCl.sub.3 under suitable conditions to produce 1-hydroxymethyl fluorene, and then reacting said 1-hydroxymethyl fluorene with hydrogen in the presence of a palladium catalyst to yield said 1-methyl fluorene.
A method for producing 4-methyl fluorene from phenathrene comprising reacting H.sub.2 O.sub.2 and acetic acid with phenanthrene under suitable conditions to produce 2,2'-dicarboxylic acid biphenyl, then reacting said 2,2'-dicarboxylic acid biphenyl with sulfuric acid under suitable conditions to produce 4-carboxylic acid fluorenone, then reacting said 4-carboxylic acid fluorenone with hydrogen in the presence of a carbon palladium catalyst under suitable conditions to produce 4-carboxylic acid fluorene, and then reacting said 4-carboxylic acid fluorene with LiAlH.sub.4 and AlCl.sub.3 to yield 4-hydroxymethyl fluorene, and then reducing said 4-hydroxymethyl fluorene with hydrogen in the presence of a palladium carbon catalyst to yield said 4-methyl fluorene.
A method for preparing 4-methyl fluorene from phenathrene comprising reacting H.sub.2 O.sub.2 and acetic acid with phenathrene under suitable conditions to produce 2,2'-dicarboxylic acid biphenyl, then reacting said 2,2'-dicarboxylic acid biphenyl with sulfuric acid to produce 4-carboxylic acid fluoreneone, then reacting said 4-carboxylic acid fluorenone with LiAlH.sub.4 and AlCl.sub.3 to produce 4-hydroxymethyl fluorenone, and then reducing said 4-hydroxymethyl fluorenone with hydrogen in the presence of a palladium carbon catalyst to produce said 4-methyl fluorene.
A method for preparing 1-tertiary butyl fluorene comprising reacting fluoranthene with hydrogen peroxide and acetic acid under suitable conditions to produce 1-carboxylic acid fluorenone and then reducing said 1-carboxylic acid fluorenone with hydrogen in the presence of a palladium carbon catalyst to produce 1-carboxylic acid fluorene and then reacting said 1-carboxylic acid fluorene with trimethylaluminum under suitable conditions to yield said 1-tert-butyl fluorene.
The compound known as 1-tert-butyl fluorene.
A method for preparing 4-tert-butyl fluorene comprising reacting 4-carboxylic acid fluorenone with hydrogen in the presence of a carbon palladium catalyst under suitable conditions to produce 4-carboxylic acid fluorene and then reacting said 4-carboxylic acid fluorene with trimethylaluminum under suitable conditions to yield said 4-tert-butyl fluorene.
The compound 4-tert-butyl fluorene.
Dependencies are inferred from the claim text.