Process for preparing N-(5-chloro-2-isopropylbenzyl)cyclopropanamine
US-9440908-B2 · Sep 13, 2016 · US
Synthesis of diiodoperfluoro-C3 to C7-alkanes
US9505687B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9505687-B2 |
| Application number | US-201615053634-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 25, 2016 |
| Priority date | Feb 27, 2015 |
| Publication date | Nov 29, 2016 |
| Grant date | Nov 29, 2016 |
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- Title
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Abstract
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The present invention is the process comprising forming a stable mixture comprising I(CF 2 ) n I, wherein n is at least 3 and at least one of I(CF 2 ) n I, wherein n is 1 or 2, as a contaminant in said mixture and heating said mixture to a temperature of at least 220° C. to reduce the amount of said contaminant to be no greater than 1% when said contaminant is ICF 2 I (n=1) and no greater than 0.1% when said contaminant is ICF 2 CF 2 I (n=2).
First claim
Opening claim text (preview).
What is claimed is: 1. A process comprising forming a stable mixture comprising I(CF 2 ) n I, wherein n is at least 3 and at least one of I(CF 2 ) n I, wherein n is 1 or 2, as a contaminant in said mixture and heating said mixture to a temperature of at least 220° C. to reduce the amount of said contaminant to be no greater than 1% when said contaminant is ICF 2 I and no greater than 0.1% when said contaminant is ICF 2 CF 2 I. 2. The process of claim 1 wherein said stable mixture is the reaction product of a chemical reaction in a reactor. 3. The process of claim 2 wherein said chemical reaction is without the need for catalyst being present. 4. The process of claim 1 wherein said stable mixture contains I(CF 2 ) 3 I as the predominant component. 5. The process of claim 4 wherein said chemical reaction is between iodine and hexafluoropropylene oxide. 6. The process of claim 5 wherein said I(CF 2 ) n I, wherein n is at least 3 is the homologue mixture of I(CF 2 ) n I wherein n is 3 to 7 and said I(CF 2 ) n I, wherein n is 3, comprises at least 70% of said homologue mixture. 7. The process of claim 6 wherein the yield of said homologue mixture is at least 70%. 8. The process of claim 7 wherein said chemical reaction between said iodine and said hexafluoropropylene oxide is carried out at a temperature of 150° C. to 210° C. prior to heating said mixture to a temperature of at least 220° C. 9. The process of claim 8 wherein the molar proportion of said hexafluoropropylene oxide to said iodine in said chemical reaction is at least 3.0. 10. The process of claim 8 wherein the molar proportion of said hexafluoropropylene oxide to said iodine in said chemical reaction is at least 3.3.
Assignees
Inventors
Classifications
- C07C17/093Primary
by replacement by halogens · CPC title
- C07C17/395Primary
by treatment giving rise to a chemical modification of at least one compound · CPC title
by condensation reactions · CPC title
by reactions involving an increase in the number of carbon atoms in the skeleton · CPC title
by addition of halogens · CPC title
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- What does patent US9505687B2 cover?
- The present invention is the process comprising forming a stable mixture comprising I(CF 2 ) n I, wherein n is at least 3 and at least one of I(CF 2 ) n I, wherein n is 1 or 2, as a contaminant in said mixture and heating said mixture to a temperature of at least 220° C. to reduce the amount of said contaminant to be no greater than 1% when said contaminant is ICF 2 I (n=1) and no greater than …
- Who is the assignee on this patent?
- Chemours Co Fc Llc
- What technology area does this patent fall under?
- Primary CPC classification C07C17/093. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 29 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).