RECOVERY OF FLUORENE AND PURIFICATION OF DIOLS BEARING FLUORENE SKELETON

Title:

RECOVERY OF FLUORENE AND PURIFICATION OF DIOLS BEARING FLUORENE SKELETON

Document Type and Number:

Japanese Patent JP2001002609

Kind Code:

A

Abstract:

To recover fluorene, a starting chemical, through a simple process, by treating a crude product including fluorene and specific two compounds with a specific alcohol.

A crude product including (A) fluorene, (B) a diol of formula I (R1 and R2 are each a 1-8C alkylene) and (C) a compound of formula II (R3 is a 1-8C alkylene) is treated with (D) a 1-4C alcohol to recover the component A. As a component D, is cited methanol, ethanol, propanol, butanol and the like. The amount of the component D to be used in this treatment is preferably about 5-300-fold, more preferably 10-100-fold weight of the crude product. The component A is recovered, for example, by dissolving the crude product in the component D, cooling the solution to precipitate the component A, filtering the precipitated component A and drying it, when needed.

More Like This:

WO/1991/002711	7,7-DIMETHYLNORBORNANE DERIVATIVES
JP4200556	Method for producing high-purity erythritol crystals
WO/2023/124395	SYSTEM AND METHOD FOR CO-PRODUCING XYLITOL AND CARAMEL COLOR BY USING XYLOSE MOTHER LIQUOR

Inventors:

YAMADA MASAHIRO
YAMADA MITSUAKI
SUDA YASUHIRO
SON GUN

Application Number:

JP17128899A

Publication Date:

January 09, 2001

Filing Date:

June 17, 1999

Export Citation:

Click for automatic bibliography generation Help

Assignee:

OSAKA GAS CO LTD

International Classes:

C07C29/78; C07C7/14; C07C13/567; C07C29/38; C07C33/36; (IPC1-7): C07C29/78; C07C7/14; C07C13/567; C07C29/38; C07C33/36

Attorney, Agent or Firm:

Eiji Saegusa (8 others)

Previous Patent: PRODUCTION OF CONJUGATED ALKADIENE TELOMER

Next Patent: PRODUCTION OF OPTICALLY ACTIVE ALCOHOL AND TRANSITION METAL COMPLEX