Halo sulfonyl aryl boronates

Organic compounds -- part of the class 532-570 series – Organic compounds – Boron acids or salts thereof

Reexamination Certificate

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Details

C562S828000, C562S832000, C562S833000

Reexamination Certificate

active

06872849

ABSTRACT:
The present invention relates to halo sulfonyl aryl boronates of the general formula (I):wherein Arylene designates a carbocyclic or heterocyclic, aromatic ring system comprising 1-3 rings;R1, R2and R3are, independently, hydrogen, C1-6alkyl, C1-6alkoxy, halogen, nitro, cyano or phenyl;X is fluoro, chloro or bromo; andY is a boroxine moiety attached via a bond from Arylene to one of the boron atoms of a boroxine ring which ring has a group of the formula -Arylene(R1)(R2)(R3)SO2X, wherein Arylene, R1, R2, R3and X are as defined above, at each of the other two boron atoms of the boroxine ring, or Y is a boronic acid group or a boronic ester group. The invention also relates to the preparation of the compounds of formula (I) and to their use in organic synthesis.

REFERENCES:
patent: WO 0232884 (2002-04-01), None
Dicesare et al., STN Database accession No. 768624 Zcaplus [online], Abstract & Chemical Communications, vol. 19, pp. 2022-2023 (2001).
International Search Report mailed Mar. 19, 2004.
Bielecki et al., J. Chem. Soc., Perkin Trans. 2, pp. 449-455 (1999).
Eggert et al., J. Org. Chem., vol. 64, pp. 3846-3852 (1999).
Shinkai et al., Trends in Analytical Chemistry, vol. 15, No. 5, pp. 188-194 (1996).

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