The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 26, 2013
Filed:
Mar. 12, 2007
Jon Njardarson, Ithaca, NY (US);
Lindsay Batory, Ithaca, NY (US);
Matthew Brichacek, Little Falls, MN (US);
Renato Bauer, Pepperell, MA (US);
Erik Rogers, Lake View, NY (US);
Jon Njardarson, Ithaca, NY (US);
Lindsay Batory, Ithaca, NY (US);
Matthew Brichacek, Little Falls, MN (US);
Renato Bauer, Pepperell, MA (US);
Erik Rogers, Lake View, NY (US);
Cornell University, Ithaca, NY (US);
Abstract
Vinyl oxiranes are rearranged to 2,5-dihydrofuran using catalyst (III) or (IV). The 2,5-dihydrofuran can be reduced to tetrahydrofuran. 3,4-Epoxy-1-butene substrate is converted to 2,5-dihydrofuran which in turn is converted to tetrahydrofuran. Substrate for making 3-methyltetrahydrofuran is prepared from isoprene. Substrate for making 2-methyltetrahydrofuran is prepared from piperylene. Reactions analogous to that with vinyl oxiranes are carried out with vinyl thiiranes and vinyl aziridines.