NZ500733A - Reduction of aromatic halogenides by LiBH4 in the presence of oxygen - Google Patents
Reduction of aromatic halogenides by LiBH4 in the presence of oxygenInfo
- Publication number
- NZ500733A NZ500733A NZ500733A NZ50073398A NZ500733A NZ 500733 A NZ500733 A NZ 500733A NZ 500733 A NZ500733 A NZ 500733A NZ 50073398 A NZ50073398 A NZ 50073398A NZ 500733 A NZ500733 A NZ 500733A
- Authority
- NZ
- New Zealand
- Prior art keywords
- tri
- oxygen
- lithium
- reduction
- butylborohydride
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/06—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to the ring carbon atoms
- C07D333/08—Hydrogen atoms or radicals containing only hydrogen and carbon atoms
- C07D333/10—Thiophene
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
- C07B31/00—Reduction in general
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/26—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only halogen atoms as hetero-atoms
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
Described is a method for the reduction of aromatic halides of the general formula (I), Ar-Xn (I), wherein Ar represents an aromatic moiety that can be substituted at one or several positions, it may be condensed, or contain at least one heteroatoms selected from the group comprising O, S or N, X represents F, Cl, Br and/or I and n is 1-10, with a hydride reagent as a reducing agent in the presence of oxygen, to a compound of general formula (II) Ar-Hn (II), where Ar and n have the same meanings as above and H is hydrogen, characterized by the use of diisobutylaluminum hydride, diisobutylaluminium hydride/ZnCl2, Al-isopropylat, sodium-bis-(2-methoxy-ethoxy)aluminiumhydride, potassium-tri-sec-butylborohydride, lithium-tri-sec-butylborohydride, potassium trisiamylborohydride, lithium trisiamylborohydride, Li-tri-t-butoxy-AlH, Li-tri-ethoxy-AlH, 9-boroabicyclo(3.3.1)nonan, lithium triethylborohydride, AlH3.AlCl2H or a combination of at least two of the reducing agents mentioned above. The reducing reaction is carried out in the presence of a solvent and a dried mixture of oxygen and an inert gas is blown or sucked through the reaction mixture.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0086597A AT405051B (en) | 1997-05-21 | 1997-05-21 | REDUCTION OF AROMATIC HALOGENIDE |
| PCT/AT1998/000112 WO1998052885A1 (en) | 1997-05-21 | 1998-04-30 | Reduction of aromatic halogenides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NZ500733A true NZ500733A (en) | 2001-03-30 |
Family
ID=3501602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NZ500733A NZ500733A (en) | 1997-05-21 | 1998-04-30 | Reduction of aromatic halogenides by LiBH4 in the presence of oxygen |
Country Status (15)
| Country | Link |
|---|---|
| EP (1) | EP0983215A1 (en) |
| JP (1) | JP2001525828A (en) |
| KR (1) | KR20010012795A (en) |
| CN (1) | CN1257467A (en) |
| AT (1) | AT405051B (en) |
| AU (1) | AU7012798A (en) |
| BG (1) | BG103880A (en) |
| BR (1) | BR9809661A (en) |
| CA (1) | CA2289992A1 (en) |
| HU (1) | HUP0004681A2 (en) |
| NO (1) | NO995494L (en) |
| NZ (1) | NZ500733A (en) |
| PL (1) | PL336906A1 (en) |
| SK (1) | SK158399A3 (en) |
| WO (1) | WO1998052885A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006018703A2 (en) * | 2004-08-16 | 2006-02-23 | Ranbaxy Laboratories Limited | Processes for preparation of narwedine and its use in the synthesis of galantamine |
| US9738122B2 (en) * | 2010-12-02 | 2017-08-22 | The Yokohama Rubber Co., Ltd. | Tire provided with information acquisition device |
| CN107602318B (en) * | 2017-09-08 | 2020-06-05 | 郑州大学 | Method for liquid-phase reduction dehalogenation of halogenated aromatic hydrocarbon under mild condition |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3839329A1 (en) * | 1988-11-22 | 1990-05-31 | Basf Ag | METHOD FOR THE REDUCTIVE ENTHALOGENATION OF AROMATES |
-
1997
- 1997-05-21 AT AT0086597A patent/AT405051B/en not_active IP Right Cessation
-
1998
- 1998-04-30 CA CA002289992A patent/CA2289992A1/en not_active Abandoned
- 1998-04-30 AU AU70127/98A patent/AU7012798A/en not_active Abandoned
- 1998-04-30 SK SK1583-99A patent/SK158399A3/en unknown
- 1998-04-30 CN CN98805275.XA patent/CN1257467A/en active Pending
- 1998-04-30 NZ NZ500733A patent/NZ500733A/en unknown
- 1998-04-30 KR KR1019997010758A patent/KR20010012795A/en not_active Application Discontinuation
- 1998-04-30 PL PL98336906A patent/PL336906A1/en unknown
- 1998-04-30 EP EP98916623A patent/EP0983215A1/en not_active Withdrawn
- 1998-04-30 JP JP54968898A patent/JP2001525828A/en active Pending
- 1998-04-30 HU HU0004681A patent/HUP0004681A2/en unknown
- 1998-04-30 BR BR9809661-3A patent/BR9809661A/en not_active Application Discontinuation
- 1998-04-30 WO PCT/AT1998/000112 patent/WO1998052885A1/en not_active Application Discontinuation
-
1999
- 1999-11-10 NO NO995494A patent/NO995494L/en not_active Application Discontinuation
- 1999-11-15 BG BG103880A patent/BG103880A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| PL336906A1 (en) | 2000-07-17 |
| KR20010012795A (en) | 2001-02-26 |
| ATA86597A (en) | 1998-09-15 |
| HUP0004681A2 (en) | 2001-04-28 |
| NO995494D0 (en) | 1999-11-10 |
| CA2289992A1 (en) | 1998-11-26 |
| BG103880A (en) | 2000-06-30 |
| AU7012798A (en) | 1998-12-11 |
| JP2001525828A (en) | 2001-12-11 |
| AT405051B (en) | 1999-05-25 |
| NO995494L (en) | 1999-11-10 |
| CN1257467A (en) | 2000-06-21 |
| SK158399A3 (en) | 2000-07-11 |
| WO1998052885A1 (en) | 1998-11-26 |
| EP0983215A1 (en) | 2000-03-08 |
| BR9809661A (en) | 2000-07-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PSEA | Patent sealed |