Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2007-12-04
2007-12-04
Dentz, Bernard (Department: 1625)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C549S423000
Reexamination Certificate
active
10516756
ABSTRACT:
The present invention relates to a process for preparing tetrahydropyran-4-ol which comprises the steps of (A) a cyclization step of preparing tetrahydropyranyl-4-formate represented by the formula (1):by reacting 3-buten-1-ol, a formaldehyde compound and formic acid, and(B) then, a solvolysis step of subjecting the tetrahydropyranyl-4-formate to solvolysis to obtain tetrahydropyran-4-ol represented by the formula (2):and an intermediate and a process for preparing the same.
REFERENCES:
patent: WO 01/42232 (2001-06-01), None
Gelin, Rene et al, Etude de la reaction de Prins entre des alcools β-ethyleniques et le formaldehyde, Comptes Rendus des Seances d l' Academie des Sciences, Serie C: Sciences Chimiques, 1972, vol. 275, No. 17, pp. 957-959.
Hanschke, E. et al, Zur Kenntnis der Prins schen Reaction, III. Mitteil.: Uber die Reaction von Allylcarbinol mit Aldehyden und Ketonen, Chem Ber., 1955, vol. 88, pp. 1053-1061.
Gerin, Rene et al, Etude de la reaction de Prins entre des alcohols β-ethyleniques et des aldehydes, Synthese de tetrahydropyrannols-4, Comptes Rendus des Seances de l'Academie des Sciences, Serie C: Sciences Chimiques, 1971, vol. 275, pp. 254-256.
Nishiura, Kazuo et al, The Reaction of Olefins with Chloroalkoxy-alkanes and Formic Acid in Ether, Bull. Chem. Soc. Jpn., 1980, vol. 53, pp. 1376-1380.
Fukui, Kenishi et al, Reaction of Propylene with Formaldehyde, Bull, Japan, Petrol. Inst., 1961, vol. 3, pp. 27-32.
Hirotsu Kenji
Nishino Shigeyoshi
Shima Hidetaka
Suzuki Shinobu
Dentz Bernard
Frishauf Holtz Goodman & Chick P.C.
Ube Industries Ltd.
LandOfFree
Process for producing tetrahydropyran-4-ol, intermediate... 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 for producing tetrahydropyran-4-ol, intermediate..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for producing tetrahydropyran-4-ol, intermediate... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3836231