Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2007-02-13
2007-02-13
Saeed, Kamal A. (Department: 1626)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C548S365100, C548S366700
Reexamination Certificate
active
10797038
ABSTRACT:
The invention provides a method for producing a compound represented by the following formula (II), comprising executing alkali hydrolysis of a compound represented by the following formula (I) with an alkali metal hydroxide in the presence of a barium compound to from the compound represented by formula (II), precipitating the barium compound in the form of a barium halide, and eliminating the barium halide:wherein L represents a thiocyano group, an aryloxy group, an alkoxy group, an alkylthio group, an arylthio group, a heterocyclic thio group, an imide group, an imidazolyl group, a pyrazolyl group or a triazolyl group; R1represents an unsubstituted or substituted alkyl group, or an unsubstituted or substituted aryl group; R2represents a substituent; and n represents an integer of 0 to 5; in a case where n is 2 or larger, R2may be the same or different.
REFERENCES:
patent: 4367282 (1983-01-01), Yagihara et al.
patent: 62-70363 (1987-03-01), None
patent: 2002-338548 (2002-11-01), None
Journal of Sysnthetic Organic Chemistry, Japan, vol. 45, No. 2, p. 151-161 Feb. 1987, Nobuo Furutachi et al.
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