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Process for the preparation of macrocyclic compounds by photolytic decomposition of cyclic ketone peroxides

Assignee: Research Corp
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Filing: 1968-01-15
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Granted: 1970-09-15
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Expires: 1988-01-15
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Abstract

Abstract 1,185,936. Macrocyclic compounds. RESEARCH CORP. 24 Sept., 1968 [15 Jan., 1968], No. 45288/68. Heading C2C. [Also in Division C5] Macrocyclic compounds, particularly lactones are prepared by decomposing di- or triperoxides of cyclic ketones having a 5-membered or larger ring by irradiation with ultraviolet light or by heating above 100‹ C. The thermal decomposition may be effected in a sealed tube or by injection into a heated packed column. In examples 11-undecanolactone is obtained from cyclohexanone diperoxide, 13-tridecanolactone from cycloheptanone diperoxide or cyclopentanone triperoxide, 16-hexadecanolactone from cyclohexanone triperoxide and 23- tricosanolactone from cyclododecanone diperoxide. Reference is also made to the production of cyclopentadecanone using a ketosubstituted cyclohexanone triperoxide.

Inventors

  • 👤 Paul R Story

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-09 01:47
CPC Classifications
C; C07; C07D; C07D315/00; B; B01; B01J; B01J19/00; B01J19/08; B01J19/12; B01J19/122; B01J19/123; C07C; C07C1/00; C07C1/20; C07C29/00; C07C29/09; C07C29/12; C07C29/124; C07C45/00; C07C45/27; C07C45/29; C07C45/292; C07C45/56; C07C45/57; C07C2601/00; C07C2601/18; C07C2601/20

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

US2993072A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1973-09-14 1974-03-16 1974-09-15 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1977-09-14 1978-03-16 1978-09-15 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1981-09-14 1982-03-16 1982-09-15 $7700.00 Window Closed / Lapsed

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