テトラヒドロピラン−４−オン及びピラン−４−オンの製法

Japanese Patent JP5724119

B2

The present invention relates to a process for preparing tetrahydropyran-4-one represented by the formula (1): which comprises reacting at least one kind of dihydropyran-4-one and pyran-4-one represented by the formula (2): wherein represents a single bond or a double bond, and hydrogen (a) in the presence of a metal catalyst, in a mixed solvent of an aprotic solvent and an alcohol solvent, or (b) in the presence of an anhydrous metal catalyst in which a hydrated metal catalyst is subjected to dehydration treatment, in a hydrophobic organic solvent.

WO/2000/056696	METHODS FOR PRODUCING $g(a)-ACYLOXY CARBONYL COMPOUNDS FROM ENOL ESTER EPOXIDES
JPS6178752	MANUFACTURE OF 2,2-DIMETHYL-3(BERA, BETA-DICHLOROVINYL)-CYCLOPROPANE-1-CARBOXYLIC ACID ESTER, 4,4-DIMETHYL-5-HALOGEN-T-ALKOXY-TETRAHYDROPYRONE AND MANUFACTURE
JPH0643414	[Title of the Invention] Method for producing 2,2 dimethyl delta-Valerolactone

Nishino prosperity
Kenji Hirotsu
Hideyoshi Shima
Shinobu Suzuki

JP2013123695A

May 27, 2015

June 12, 2013

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Ube Industries,Ltd.

C07D309/30; C07C49/185; C07D309/38

JP63170372A

CORNUBERT, R. et al., Bulletin de la Societe Chimique de France, 1950, p36-40
SORKIN, E. et al., Helvetica Chimica Acta, 1948, Vol.31, p65-75
GROB,C.A. et al,Helvetica Chimica Acta,1964年,Vol.47, No.8,p.2145-2155
BORSCHE,W.,Berichte der Deutschen Chemischen Gesellschaft,1915年,Vol.48,p.682-686

Patent business corporation Tsukuni
Hajime Tsukuni
Yasuo Yanagibashi
Keiko Ozawa
Yoko Tanaka

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