Patent US5358670A successfully refreshed from Google Patents.
US5358670A
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Process for preparing grignard reagents in diethylene glycol dibutyl ether
Assignee: Novolyte Performance Materials LLC
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Filing: 1993-07-02
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Granted: 1994-10-25
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Expires: 2013-07-02
Abstract
Abstract This invention relates to an alkyl Grignard reagents in diethylene glycol dibutyl ether. The invention also relates to a novel method for preparing Grignard reagents comprising reacting an alkyl halide with magnesium metal in the presence of diethylene glycol dibutyl ether. Grignard reagents prepared in the presence of diethylene glycol dibutyl ether have improved yields and stability, including storage stability, at room temperature. The Grignard reagents are prepared without the use of a low boiling and/or flammable stabilizing agents such as benzene, toluene, tetrahydrofuran, and diethyl ether.
Inventors
- 👤 Stanhope P. Turnbull
- 👤 Charles R. Egedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:57
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
51 words
A novel method for preparing Grignard reagents comprising the steps of: (1) reacting an organic halide with magnesium metal in the presence of diethylene glycol dibutyl ether, and (2) cooling the mixture to room temperature, wherein the process occurs in the absence of tetrahydrofuran, benzene, toluene, and diethyl ether stabilizing agents.
Claim 2
Dependent Claim
51 words
A novel method for preparing Grignard reagents comprising the steps of: (1) reacting an organic halide with magnesium metal in the presence of diethylene glycol dibutyl ether, and (2) cooling the mixture to room temperature, wherein the process occurs in the absence of tetrahydrofuran, benzene, toluene, and diethyl ether stabilizing agents.
Claim 3
Dependent Claim
13 words
The process of claim 1, wherein said organic halide is an alkyl halide.
Claim 4
Dependent Claim
13 words
The process of claim 1, wherein said organic halide is an alkyl chloride.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-24 | 1998-04-25 | 1998-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-24 | 2002-04-25 | 2002-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-24 | 2006-04-25 | 2006-10-25 | $7700.00 | Window Closed / Lapsed |