Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2005-03-29
2005-03-29
Trinh, Ba K. (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C549S383000, C549S386000
Reexamination Certificate
active
06872840
ABSTRACT:
The present invention relates to a synthesis of an 8-membered carbocyclic compound having diexomethylene groups, more particularly to a synthesis of an 8-membered carbocyclic compound having diexomethylene groups, a novel compound having the structure represented by the following Chemical Formula 1, from trimethylsilanylmethyl-allenol derivative by the intramolecular Prins cyclization using Lewis acid. The 8-membered carbocyclic compound is a useful intermediate for synthesis of other multicarbocyclic compounds.In Chemical Formula 1, R1is a phenyl group, and R2and R3is a hydrogen atom, or R1, R2and R3may be connected with neighboring substituents to form a 5 to 10-membered aliphatic or aromatic ring.
REFERENCES:
Article “The 91stNational Meeting of the Korean Chemical Society”, ISSN 1229-6708, Apr. 18-19, 2003, p. 363.
Paul A. Wender, et al., “Transition Metal-Catalyzed [6+2] Cycloadditions of 2-Vinylcyclobutanones and Alkenes: A New Reaction for the Synthesis of Eight-Membered Rings”, J. Am. Chem. Soc., vol. 122, No. 32, 2000 American Chemical Society, pp. 7815-7816.
Scott R. Gilbertson, et al., “Rhodium Catalyzed [4+2+2] Cycloaddition and Alkyne Insertion: A New Route to Eight-Membered Rings”, J. Am. Chem. Soc., vol. 124, No. 30, 2002, American Chemical Society, pp. 8784-8785.
Chang Moon Ho
Cho Yong Seo
Kang Hyun Jung
Koh Hun Yeong
Pae Ae Nim
Korea Institute of Science And Technology
Lowe Hauptman & Berner
Trinh Ba K.
LandOfFree
Synthesis of 8-membered carbocyclic compound having... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Synthesis of 8-membered carbocyclic compound having..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synthesis of 8-membered carbocyclic compound having... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3377455