Method for producing diene compound

Details Method for producing diene compound Method for producing diene compound

2006-09-05

2006-09-05

Keys, Rosalynd (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Hydroxamic acids, chalcogen analogs or salts thereof

C568S683000, C568S684000, C568S685000

Reexamination Certificate

active

07102031

ABSTRACT:
It is an object to obtain from a mixture of a specific diene compound (1) and a compound (2) with the same molecular weight and molecular formula hard to separate by distillation, the diene compound (1) in high purity without using any special reagent or complicated technique.Namely, the present invention provides a method of inducing the Claisen rearrangement reaction of the compound (2) in a mixture containing CR1R2═CR3CFR4CR5R6OCR7═CR8R9(1) and CFR1R2CR3═CR4CR5R6OCR7═CR8R9(2), and separating the diene compound (1) from a Claisen rearrangement reaction product; or converting the Claisen rearrangement reaction product into a derivative and then separating the diene compound (1) from the derivative of the Claisen rearrangement reaction product. Wherein, R1to R9each represent a fluorine atom or the like.

REFERENCES:
patent: 0 303 292 (1989-02-01), None
patent: 1 160 231 (2001-12-01), None
patent: 1-143843 (1989-06-01), None
patent: 2-42038 (1990-02-01), None
patent: 2-311438 (1990-12-01), None
patent: 4-346956 (1992-12-01), None
patent: 4-346956 (1992-12-01), None
Kazuya et al., Fluorinated Compound and its Production, Dec. 12, 1992, Patent Abstracts of Japan.
Suzanne T. Purrington, et al., “[3,3]-Sigmatropic rearrangements of fluorinated compounds” Journal of Fluorine Chemistry, vol. 56, No. 2, XP-002370018, 1992, pp. 165-173.

Affiliated with

Also associated with

Rating

Method for producing diene compound does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for producing diene compound, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for producing diene compound will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3547838