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Title:
CATALYTIC DEHYDROXYLATION OF DIOLS AND POLYOLS
Document Type and Number:
WIPO Patent Application WO2001098241
Kind Code:
A3
Abstract:
Secondary alcohols, specifically diols and polyols, are dehydroxylated to the corresponding primary alcohols using hydrogen in the presence of a ruthenium-containing catalyst precursor having the formula {[CpRu(CO)2]2( mu -H)}<+>Q<-> or {[CpRu(CO)(PR'<3>)]2( mu -H)}<+>Q<-> or {[ZRu(L)]2( mu -H)<+>Q<->; wherein Q<-> is a non-coordinating or weakly coordinating nonreactive anion; Cp is an optionally substituted cyclopentadienyl group; R' is selected from hydrogen, alkyl, aryl and aryloxy; Z is hydridotris(3,5-dimenthylpyrazolyl)borate or hydrocarbyl hydridotris (3,5-dimethylpyrazolyl)borate; and L is (CO)2 or 1,5-cyclooctadiene.

Inventors:
BULLOCK R MORRIS
FAGAN PAUL JOSEPH
HAUPTMAN ELISABETH M
SCHLAF MARCEL
Application Number:
US0119664W
Publication Date:
June 13, 2002
Filing Date:
June 20, 2001
Export Citation:
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Assignee:
DU PONT (US)
International Classes:
C07B61/00; C07C27/00; C07C29/60; C07C31/10; C07C33/22; C07C41/09; C07C43/04; C07C43/13; (IPC1-7): C07C29/60
Foreign References:
US5543379A1996-08-06
EP0523014A21993-01-13
Other References:
G. BRACA, ET AL.: "Anionic ruthenium iodocarbonyl complexes as selective dehydroxylation catalysts in aqueous solution", JOURNAL OF ORGANOMETALLIC CHEMISTRY, vol. 417, no. 1-2, 1 October 1991 (1991-10-01), Elsevier Sequoia, Lausanne, CH, pages 41 - 49, XP002194083, ISSN: 0022-328X
C. VINCENTE, ET AL.: "Reduction of ketones by dihydrogen or hydrogen transfer catalysed by a ruthenium complex of the hydrido(3,5-dimethyl)pyrazolyl borate ligand", JOURNAL OF MOLECULAR CATALYSIS A: CHEMICAL, vol. 98, no. 1, 1995, Elsevier Science Publishers, Amsterdam, NL, pages L5 - L8, XP001064519, ISSN: 1381-1169
R. BALTZLY, ET AL.: "Catalytic debenzylation. The effect of substitution on the strength of hte O-benzyl and N-benzyl linkages", JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 65, no. 10, 14 October 1943 (1943-10-14), American Chemical Society, Washington, DC, US, pages 1984 - 1992, XP002194092, ISSN: 0002-7863
CHEMICAL ABSTRACTS, vol. 47, no. 6, 25 March 1953, Columbus, Ohio, US; abstract no. 2693h, J. MIZUGUCHI, ET AL.: "Catalytic reductionof glycerol under high pressure and temperature" column 2693; XP002194093
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