METHOD FOR PRODUCING ACYLOXYPYRANONE COMPOUND, METHOD FOR PRODUCING ALKYNE COMPOUND, AND METHOD FOR PRODUCING DIHYDROFURAN COMPOUND

WIPO Patent Application WO/2011/126082

A1

An acyloxypyranone compound represented by formula (II) (wherein R1 represents an acyl group) is produced by causing an acylating agent and a hydrolase to act on hydroxypyranone represented by formula (I) in a hydrous organic solvent; an alkyne compound represented by formula (IV) is produced by causing an acetylene organic metal compound represented by formula (III) (wherein R2 represents a hydrogen atom or a trisubstituted silyl group, and M represents an alkali metal atom, aluminum or magnesium monohalide) and a coordinating additive to act on an acyloxypyranone compound represented by formula (II); and a dihydrofuran compound represented by formula (V) is produced by acid hydrolyzing an alkyne compound represented by formula (IV).

OOTSUKA YOSHIKAZU (JP)
AKEBOSHI TOMOHIRO (JP)
YAMAZAKI AKIKO (JP)
IRIYAMA YUSUKE (JP)

PCT/JP2011/058835

October 13, 2011

April 07, 2011

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NISSAN CHEMICAL IND LTD (JP)
OOTSUKA YOSHIKAZU (JP)
AKEBOSHI TOMOHIRO (JP)
YAMAZAKI AKIKO (JP)
IRIYAMA YUSUKE (JP)

C12P17/06; C07B53/00; C07D307/33; C07D309/30; C07D309/32; C07F7/08; C12P17/04

WO2009084655A1	2009-07-09
WO2009084655A1	2009-07-09

MARCO VAN DEN HEUVEL ET AL.: "Optically Active 6-Acetyloxy-2H-pyran-3(6H)-one Obtained by Lipase Catalyzed Transesterification and Esterification", TETRAHEDRON LETTERS, vol. 38, no. 9, 1997, pages 1655 - 1658, XP004053253
See also references of EP 2557177A4
MADDAFORD ET AL., SYNTHESIS, vol. 9, 2007, pages 1378 - 1384
TETRAHEDRON LETTERS, vol. 38, 1997, pages 1655
TETRAHEDRON, vol. 56, 2000, pages 8953

KURIHARA, Hiroyuki et al. (JP)
Hiroyuki Kurihara (JP)

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