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US4138408A Expired / Lapsed US ⏱️ 0.0 years remaining

ω-Alkoxy derivatives of lactams and process for their manufacture

Assignee: Hoechst AG
•
Filing: 1977-08-17
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Granted: 1979-02-06
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Expires: 1997-08-17
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Abstract

Abstract Compounds of the formula ##STR1## in which R 4 represents an alkyl radical having from 1 to 4 carbon atoms, R 5 represents a linear or branched alkylene radical having from 1 to 10 carbon atoms in the chain which may be substituted by groups which are not reactive under the applied conditions, and R 6 represents hydrogen or a branched alkyl radical having from 3 to 10 carbon atoms with a secondary or tertiary N-α-C atom, are prepared by anodic alkoxylation of lactams of the formula ##STR2## with an alcohol of the formula R 4 OH, in which formulae R 4 , R 5 and R 6 have the aforesaid meaning, in the presence of at least one alkali metal or tetraalkylammonium tetrafluoroborate, hexafluoroborate or nitrate as conducting salt, at a temperature of up to about 100° C. in an electrolytic cell with stationary or flowing electrolyte. Some of the products are novel. They can be used as intermediates for the manufacture of pharmaceuticals, antistatic agents in textile industries and as intermediates for polymerization reactions and for the preparation of α-amino-α,ω-dicarboxylic acids.

Inventors

  • 👤 Michael Mitzlaff

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 17:27
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D205/00; C07D205/02; C07D205/06; C07D205/08; C07D207/273; C07D211/00; C07D211/04; C07D211/68; C07D211/72; C07D211/74; C07D211/76; C07D223/00; C07D223/02; C07D223/06; C07D223/08; C07D223/10; C07D225/00; C07D225/02; C25; C25B; C25B3/00; C25B3/01; C25B3/07; C25B3/09; C25B3/20; C25B3/23

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 84 words
A compound of the formula ##STR24## in which A represents --CH.tbd.C--, --CH═CH-- or --CH--CH-- R 4 represents an alkyl group having from 1 to 4 carbon atoms, R 6 represents hydrogen or a branched alkyl group having from 3 to 10 carbon atoms with a secondary or tertiary N-α-C atom, and R 7 represents an alkyl group having from 1 to 4 carbon atoms, a cycloalkyl group having 5 or 6 carbon atoms or an carbocyclic aralkyl group of 6 to 9 carbon atoms.
Claim 2
Dependent Claim 84 words
A compound of the formula ##STR24## in which A represents --CH.tbd.C--, --CH═CH-- or --CH--CH-- R 4 represents an alkyl group having from 1 to 4 carbon atoms, R 6 represents hydrogen or a branched alkyl group having from 3 to 10 carbon atoms with a secondary or tertiary N-α-C atom, and R 7 represents an alkyl group having from 1 to 4 carbon atoms, a cycloalkyl group having 5 or 6 carbon atoms or an carbocyclic aralkyl group of 6 to 9 carbon atoms.
Claim 3
Dependent Claim 28 words
A compound as claimed in claim 1 in which A stands for --C.tbd.C--, R 4 and R 7 stand for CH 3 and R 6 stands for ##STR25##
Claim 4
Dependent Claim 1 words
1-methyl-3-[6-carbomethoxy-2-hexine-yl(1)]-4-hydroxymethyl-5-methoxy-pyrrolidone.
Claim 5
Dependent Claim 1 words
1-methyl-3-[6-carbomethoxy-2-hexine-yl(1)]-4-hydroxymethyl-5-methoxy-pyrrolidone.
Claim 6
Dependent Claim 1 words
1-isopropyl-3-[6-carbomethoxy-2-hexine-yl(1)]-4-hydroxymethyl-5-methoxy-pyrrolidone.
Claim 7
Dependent Claim 1 words
1-isopropyl-3-[6-carbomethoxy-2-hexine-yl(1)]-4-hydroxymethyl-5-methoxy-pyrrolidone.

References Cited (Backward Citations)

DE2452536A1 Cited
US4096274A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1982-02-05 1982-08-07 1983-02-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1986-02-05 1986-08-07 1987-02-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1990-02-05 1990-08-07 1991-02-06 $7700.00 Window Closed / Lapsed

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