Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing
Reexamination Certificate
2005-09-09
2008-12-02
Parsa, Jafar (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Oxygen containing
Reexamination Certificate
active
07459588
ABSTRACT:
A method for producing an unsaturated vicinal diol compound represented by the formula (2):wherein R1, R2, R3, R4, R5and R are the same or different and each independently represent a hydrogen atom; a C1-C20 alkyl group which may be substituted with a halogen atom or atoms, a C1-C6 alkoxy group or groups, a C2-C7 alkoxycabonyl group or groups, a C6-C10 aryl group or groups, or a carboxyl group or groups; or a C6-C10 aryl group which may be substituted with a halogen atom or atoms, a C1-C6 alkoxy group or groups, a C6-C10 aryl group or groups, or a carboxyl group or groups; which comprises reacting an unsaturated epoxy compound represented by the formula (1):wherein R1, R2, R3, R4, R5and R6are the same as defined above, with water in the presence of a silicate containing at least one element selected from a group 5 element and a group 6 element of the long periodic table as a constituent.
REFERENCES:
patent: 5250743 (1993-10-01), Boaz
patent: 2005/0090688 (2005-04-01), Hagiya
patent: 44 29 699 (1995-03-01), None
patent: 2000-159693 (2000-06-01), None
patent: WO 91/15469 (1991-10-01), None
Foley & Lardner LLP
Parsa Jafar
Sumitomo Chemical Company Limited
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