Organic compounds -- part of the class 532-570 series – Organic compounds – Sulfonic acids or salts thereof
Reexamination Certificate
2005-06-14
2005-06-14
Barts, Samuel (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Sulfonic acids or salts thereof
C562S109000, C562S115000, C562S030000
Reexamination Certificate
active
06906220
ABSTRACT:
Disclosed herein is a process for preparing 4-(2-sulfoethylcyclohexane)-1,2-diol sodium salt, at ambient condition and in the presence of a buffer and an initiator, from vinylcyclohexane-1,2-diol. Also disclosed is a process for preparing 3-(2-sulfoethyl) hexanedioic acid, sodium salt by oxidizing 4-(2-sulfoethylcyclohexane)-1,2 diol sodium salt with hydrogen peroxide in the presence of tungstic acid.
REFERENCES:
patent: 2793229 (1957-05-01), Blaser et al.
patent: 6312805 (2001-11-01), Sun
patent: 61-282354 (1986-12-01), None
CA:127:4966 abs of Toxicological and Environmental Chemistry by Mash 57(1-4) pp 153-162 1996.
CA:122:239210 abs of Neftekhimiya by Alimardanov et al 34(4) pp 344-50 1994.
Hans-Fischer-Gesellschaft, 29 Bis 30, Sep. 1960 in Munchen, pp. 69-71 (Angew. Chem 73 Jahrg. 1961).
Synthesis of Highly Water-Soluble Cyclodextrin Sulfonates by Addition of Hydrogen Sulfite to Cyclodextrin Allyl Ethers. Gerhard Wenz and Thomas Hofler. Carbohydrate Research 322 (1999) 153-165.
The Peroxide Effect in the Addition of Reagents to Unsaturated Compounds. IVIII. The Addition and Substitution of Bisulfite. M. S. Kharasch, Ernest M. May, and Frank R. Mayo. J. Org. Chem. v. 3, 1938-39, pp. 175-192.
Chen Shaorong
Sun Yanhui
Barts Samuel
Invista North America S.àr.l.
LandOfFree
Process to produce 4-(2-sulfoethyl) cyclohexane, 1,2-diol... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process to produce 4-(2-sulfoethyl) cyclohexane, 1,2-diol..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process to produce 4-(2-sulfoethyl) cyclohexane, 1,2-diol... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3485870