Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PROCESS FOR PRODUCING DIENE COMPOUND
Document Type and Number:
WIPO Patent Application WO/2003/053899
Kind Code:
A1
Abstract:
A specific diene compound (1) having high−purity is obtained, without using any special reagent or complicated technique, from a mixture of the diene compound (1) and a compound (2) which is difficult to separate by distillation and has the same molecular weight and molecular formula as the compound (1). The method comprises treating a mixture comprising CR1R2=CR3CFR4CR5R6OCR7=CR8R9 (1) and CFR1R2CR3=CR4CR5R6OCR7=CR8R9 (2) to cause the compound (2) to undergo the Claisen rearrangement and then separating the diene compound (1) from the product of the Claisen rearrangement. Alternatively, it comprises conducting the Claisen rearrangement, converting the product of the Claisen rearrangement into a derivative, and then separating the diene compound (1) from the derivative. In the formulae, R1 to R9 each is fluorine, etc.

Inventors:
IWAYA MASAO (JP)
OKAMOTO HIDEKAZU (JP)
OHARU KAZUYA (JP)
Application Number:
PCT/JP2002/013019
Publication Date:
July 03, 2003
Filing Date:
December 12, 2002
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ASAHI GLASS CO LTD (JP)
IWAYA MASAO (JP)
OKAMOTO HIDEKAZU (JP)
OHARU KAZUYA (JP)
International Classes:
C07C17/361; C07C41/44; C07C43/17; C07C51/58; C08F16/32; C08F36/20; (IPC1-7): C07C41/44; C07C43/17; C07C45/51; C07C49/227; C07C17/361; C07C21/19; C08F16/32
Foreign References:
JPH01143843A1989-06-06
JPH02311438A1990-12-27
JPH04346956A1992-12-02
JPH0242038A1990-02-13
Other References:
See also references of EP 1462435A4
Attorney, Agent or Firm:
Senmyo, Kenji (38 Kanda-Higashimatsushitach, Chiyoda-ku Tokyo, JP)
Download PDF: