Kinase inhibitors
US-2016340343-A1 · Nov 24, 2016 · US
Catalytic reduction of halogenated carbosilanes and halogenated carbodisilanes
US11261202B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11261202-B2 |
| Application number | US-201716603358-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 7, 2017 |
| Priority date | Apr 7, 2017 |
| Publication date | Mar 1, 2022 |
| Grant date | Mar 1, 2022 |
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Abstract
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Selective reduction methods for halogenated carbosilanes and carbodisilanes are disclosed. More particularly, high yields of the desired carbosilanes and carbodisilanes are obtained by reduction of their halogenated counterparts using a reducing agent and tetrabutylphosphonium chloride (TBPC) as a catalyst.
First claim
Opening claim text (preview).
What is claimed is: 1. A method of synthesizing a carbosilane compound having the formula SiH a R 4-a wherein a=1 to 3 and R is a C 1 to C 12 alkyl group, a C 3 to C 12 aryl group, fused bicyclic aryl groups, a substituted phenyl group, or a heterocyclic group, comprising: reacting a halogenated carbosilane having the formula R b SiH c X 4-b-c , wherein b=1 to 3; c=0 to 2; b+c=1 to 3; X=a halogen atom (Cl, Br or I); and R is a C 1 to C 12 alkyl group, a C 3 to C 12 aryl group, fused bicyclic aryl groups, a substituted phenyl group, or a heterocyclic group, with a reducing agent catalyzed by using tetrabutylphosphoniumchloride (TBPC) as a catalyst. 2. The method of claim 1 , wherein the reducing agent has the formula HSiR 3 wherein R is a C 1 -C 12 alkyl group. 3. The method of claim 1 , wherein a=4-b-c. 4. The method of claim 3 , wherein c=0. 5. The method of claim 4 , wherein the reaction yields between approximately 60% w/w and approximately 80% w/w of the carbosilane compound. 6. The method of claim 1 , wherein the reducing agent is selected from the group consisting of triethylsilane, trimethylsilane, and combinations thereof. 7. The method of claim 1 , wherein the halogenated carbosilane is a phenyl or aryl substituted carbohalosilane. 8. The method of claim 7 , wherein the phenyl or aryl substituted carbohalosilane is dichlorodiphenylsilane. 9. The method of claim 7 , wherein the phenyl or aryl substituted carbohalosilane is p-tolyltrichlorosilane. 10. The method of claim 1 , wherein a molar ratio of the reducing agent to the halogenated carbosilane is 0 to 10% mol/mol over stoichiometric amount. 11. The method of claim 1 , wherein the halogenated carbosilane reduced by the reducing agent is a selective reduction.
Assignees
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Classifications
- C07F7/083Primary
Syntheses without formation of a Si-C bond · CPC title
Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20 · CPC title
Phosphorus · CPC title
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- What does patent US11261202B2 cover?
- Selective reduction methods for halogenated carbosilanes and carbodisilanes are disclosed. More particularly, high yields of the desired carbosilanes and carbodisilanes are obtained by reduction of their halogenated counterparts using a reducing agent and tetrabutylphosphonium chloride (TBPC) as a catalyst.
- Who is the assignee on this patent?
- Air Liquide, Air Liquide Advanced Mat Inc, Khandelwal Manish, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification C07F7/083. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 01 2022 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).