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1. (WO2004005273) MANUFACTURE OF 3-METHYL-TETRAHYDROFURAN FROM ALPHA-METHYLENE-GAMMA-BUTYROLACTONE IN A TWO STEP PROCESS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2004/005273    International Application No.:    PCT/US2002/038339
Publication Date: 15.01.2004 International Filing Date: 27.11.2002
Chapter 2 Demand Filed:    04.02.2004    
IPC:
C07D 307/06 (2006.01), C07D 315/00 (2006.01)
Applicants: INVISTA TECHNOLOGIES S.à.r.l. [US/US]; Intellectual Property Record Center, 4417 Lancaster Pike, CRP 722/1032, Wilmington, DE 19805 (US)
Inventors: MANZER, Leo, Ernest; (US)
Agent: FURR, Robert, B. Jr.; E.I. Du Pont de Nemours and Company, Legal Patent Records Center, 4417 Lancaster Pike, Wilmington, DE 19805 (US)
Priority Data:
10/191,305 09.07.2002 US
Title (EN) MANUFACTURE OF 3-METHYL-TETRAHYDROFURAN FROM ALPHA-METHYLENE-GAMMA-BUTYROLACTONE IN A TWO STEP PROCESS
(FR) FABRICATION DE 3-METHYL-TETRAHYDROFURAN A PARTIR D'ALPHA-METHYLENE-GAMMA-BUTYROLACTONE DANS UN PROCEDE A DEUX ETAPES
Abstract: front page image
(EN)Disclosed is a two-step, continuous hydrogenation process for the preparation of 3-methyl-tetrahydrofuran from alpha-methylene-gamma-butyrolactone, which comprises a first step of subjecting alpha-methylene-gamma-butyrolactone to hydrogenation to synthesize 2-methyl-gamma-butyrolactone; and the second step of hydrogenating the 2-methyl-gamma-butyrolactone formed in the first step. The above process enables the production of the objective highly-pure 3-methyl-tetrahydrofuran free from alcohol in high efficiency and high conversion through simple production steps.
(FR)L'invention concerne un procédé d'hydrogénation continue en deux étapes pour la préparation de 3-methyl-tetrahydrofuran à partir d'alpha-methylene-gamma-butyrolactone. La première étape consiste à soumettre alpha-methylene-gamma-butyrolactone à une hydrogénation afin de synthétiser 2-methyl-gamma-butyrolactone; et la deuxième étape consiste à hydrogéner 2-methyl-gamma-butyrolactone obtenu dans la première étape. Le procédé susmentionné permet la production de 3-methyl-tetrahydrofuran attendu, à pureté élevée et sans alcool, de manière très efficace et à haute conversion par des étapes de production simples.
Designated States: BR, CA, JP.
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE, SK, TR).
Publication Language: English (EN)
Filing Language: English (EN)