Summary of the invention
The 2-nitro-4 that the objective of the invention is open novelty, 5-bihalogenated phenols compounds and 2-amino-4,5-bihalogenated phenols compounds and salt thereof.
Compound of the present invention is suc as formula shown in the I:
Wherein, A is NO
2Or NH
2
When A is NO
2The time, R is not for having; X is F, and Y is I or Br; Or X is Cl, and Y is I; Or X is Br, and Y is F or I; Or X is I, and Y is F or Br; Wherein preferred X is F, and Y is Br;
When A is NH
2The time, R is nothing, HCl, H
2SO
4Or CH
3COOH; X is F, and Y is Br or I; Or X is Cl, and Y is Br or I; Or X is Br, and Y is F, Br or I; Or X is I, and Y is Cl, Br, F or I.
Another object of the present invention provides 2-nitro-4 of the present invention; The compound method of 5-bihalogenated phenols compounds the steps include: that 4-bihalogenated phenols compounds and concentration are more than or equal to the nitric acid of weight percent 65% with 3 shown in the formula II; With mol ratio 1: 0.5~1: 1.5 in solvent; Under 0~100 ℃ of temperature of reaction, react, the reaction times is 1~10 hour, gets final product;
Wherein, X is F, and Y is I or Br; Or X is Cl, and Y is I; Or X is Br, and Y is F or I; Or X is I, and Y is F or Br.
Wherein, described suc as formula 3 shown in the II, the 4-bihalogenated phenols compounds, wherein X is F, Y is I or Br; Or X is Br, and Y is F, commercially available getting.
Wherein, described suc as formula 3 shown in the II, the 4-bihalogenated phenols compounds, wherein X is Cl, Y is I; Or X is Br, and Y is I; Or X is I, and Y is F or Br, can be according to making suc as formula the reaction shown in the VI:
Formula VI
What wherein, described nitric acid was preferable is the nitrosonitric acid of concentration more than or equal to weight percent 90%; Described 3, what the mol ratio of 4-bihalogenated phenols compounds and nitric acid was preferable is 1: 0.7~1: 1.2, and better is 1: 0.7~1: 0.99; What described temperature of reaction was preferable is 0~50 ℃, and better is 0~30 ℃.
Wherein, described preferred solvents be methylene dichloride, chloroform, tetracol phenixin, 1,2-ethylene dichloride, vinyl trichloride, sym.-tetrachloroethane, chlorobenzene, dichlorobenzene, oil of mirbane, acetonitrile, Nitromethane 99Min., benzyl cyanide, sulfuric acid or acetic acid.
Wherein, when solvent was sulfuric acid or acetic acid, what described temperature of reaction was preferable was 0~35 ℃.
It is amino-4 that another purpose of the present invention provides 2-of the present invention, and the compound method of 5-bihalogenated phenols compounds the steps include: suc as formula the 2-nitro-4 shown in the I, the 5-bihalogenated phenols compounds, and wherein A is NO
2R is not for having; X is F, and Y is Br or I; Or X is Cl, and Y is Br or I; Or X is Br, and Y is F, Br or I; Or X is I, and Y is Cl, Br, F or I; With reductive agent in solvent, under temperature of reaction-10~50 ℃, react, get final product.
Wherein, described suc as formula the 2-nitro-4 shown in the I, the 5-bihalogenated phenols compounds, wherein A is NO
2The time, R is not for having; X is F, and Y is I or Br; Or X is Cl, and Y is I; Or X is Br, and Y is F or I; Or X is I, and Y is F or Br, can be made by compound method of the present invention.
Wherein, described suc as formula the 2-nitro-4 shown in the I, the 5-bihalogenated phenols compounds, wherein A is NO
2R is not for having; Or X is Cl, and Y is Br; Or X is Br, and Y is Br; Or X is I, and Y is Cl or I, all commercially available getting.
Wherein, what the molar weight of described reductive agent was preferable is the 2-nitro-4 described in the inventive method, 2.0~3.5 times of 5-bihalogenated phenols compounds molar weight; That described reductive agent is preferable is iron, tin, zinc, tindichloride, iron protochloride, LiAlH
4Or hydrogen; Described temperature of reaction is preferable is-10-30 ℃; Described preferred solvents be methyl alcohol, ethanol, propyl alcohol, Virahol, THF, 1,4-dioxane, ethers or alcohols; Described ethers such as methyl-phenoxide, described alcohols such as butanols.
Wherein, when reductive agent is hydrogen, in reactant, also add catalyst P d, Raney Ni, Rh or Ru etc. react preferable under the pressure of 50~200psi, carrying out.
Further purpose of the present invention provides 2-of the present invention amino-4; The compound method of the salt of 5-bihalogenated phenols compounds; It is characterized in that: with 2-amino-4 of the present invention, 5-bihalogenated phenols compounds and hydrochloric acid, hydrogen chloride gas, sulfuric acid or acetic acid react, and get final product.
Wherein, behind acid-respons, can fully stir, leave standstill filtration, get final product to such an extent that 2-is amino-4, the solid of the salt of 5-phenyl-dihalide phenolic compound.
Positive progressive effect of the present invention is: it is novel in the 2-nitro-4 shown in the I to the invention discloses, 5-bihalogenated phenols compounds and 2-amino-4,5-bihalogenated phenols compounds and salt thereof, and compound method.But compound method highly selective of the present invention obtain 2-nitro-4,5-bihalogenated phenols compounds and 2-are amino-4,5-bihalogenated phenols compounds and salt thereof, and raw material is cheap are simple to operate, are easy to large-scale production, have higher prospects for commercial application.
Embodiment
Mode through embodiment further specifies the present invention below, does not therefore limit the present invention among the described scope of embodiments.
Embodiment 1~7 2-nitro-4, the 5-bihalogenated phenols compounds
Table 1 has provided structure suc as formula the 2-nitro-4 shown in the I, 5-bihalogenated phenols compounds embodiment 1~7.
Table 1 2-nitro-4,5-bihalogenated phenols compounds embodiment 1~7
Embodiment |
A |
X |
Y |
R |
Embodiment |
A |
X |
Y |
R |
1 |
NO
2 |
F |
I |
\ |
5 |
NO
2 |
Br |
I |
\ |
2 |
NO
2 |
F |
Br |
\ |
6 |
NO
2 |
I |
F |
\ |
3 |
NO
2 |
Cl |
I |
\ |
7 |
NO
2 |
I |
Br |
\ |
4 |
NO
2 |
Br |
F |
\ |
|
|
|
|
|
Embodiment 8~29 2-amino-4,5-bihalogenated phenols compounds and salt thereof
Table 2 has provided structure suc as formula the amino of the 2-shown in the I-4,5-bihalogenated phenols compounds and salt embodiment 8~29 thereof.
Table 2 2-amino-4,5-bihalogenated phenols compounds and salt embodiment 8~29 thereof
Embodiment |
A |
X |
Y |
R |
Embodiment |
A |
X |
Y |
R |
8 |
NH
2 |
F |
Br |
\ |
19 |
NH
2 |
F |
Br |
HCl |
9 |
NH
2 |
F |
I |
\ |
20 |
NH
2 |
F |
I |
H
2SO
4 |
10 |
NH
2 |
Cl |
Br |
\ |
21 |
NH
2 |
Cl |
Br |
CH
3COOH
|
11 |
NH
2 |
Cl |
I |
\ |
22 |
NH
2 |
Cl |
I |
HCl |
12 |
NH
2 |
Br |
Br |
\ |
23 |
NH
2 |
Br |
Br |
H
2SO
4 |
13 |
NH
2 |
Br |
F |
\ |
24 |
NH
2 |
Br |
F |
CH
3COOH
|
14 |
NH
2 |
Br |
I |
\ |
25 |
NH
2 |
Br |
I |
HCl |
15 |
NH
2 |
I |
F |
\ |
26 |
NH
2 |
I |
F |
H
2SO
4 |
16 |
NH
2 |
I |
Br |
\ |
27 |
NH
2 |
I |
Br |
CH
3COOH
|
17 |
NH
2 |
I |
Cl |
\ |
28 |
NH
2 |
I |
Cl |
HCl |
18 |
NH
2 |
I |
I |
\ |
29 |
NH
2 |
I |
I |
H
2SO
4 |
Method embodiment 1 preparation 2-nitro-4-fluoro-5-iodophenol
4-fluorophenol (0.2mol), triethylamine (0.24mol) joins methylene dichloride (300mL), and the back room temperature that stirs drips aceticanhydride (0.20mol).Reflux to raw material 4-fluorophenol disappearance (HPLC tracking) then.Reacting liquid filtering, filtrate decompression concentrate and obtain acetic acid 4-fluorobenzene phenolic ester.
Above-mentioned resulting acetic acid 4-fluorobenzene phenolic ester (0.1mol) is joined methylene dichloride (250mL) solution, and stirring at room adds iodine (0.12mol) after following 0.5 hour.Reflux is stirred to raw material acetic acid 4-fluorobenzene phenolic ester disappearance (HPLC tracking) then.The aqueous sodium hydroxide solution of adding 25% behind the reaction solution concentrating under reduced pressure; And be heated to 90 ℃ of stirrings after 3 hours; Add concentrated hydrochloric acid behind the cool to room temperature and regulate pH=2-3, leave standstill, filter, drying obtains 3-iodo-4-fluorophenol, it is 60% that chlorination goes on foot overall yield with hydrolysis two.
3-iodo-4-fluorophenol (0.314mol) is dissolved in 1,2-ethylene dichloride (200mL).At room temperature, drip the nitric acid (0.157mol) of weight ratio 75%; The mol ratio of nitric acid is 1: 0.5 in 3-iodo-4-fluorophenol and the aqueous nitric acid.The back reaction under 50-55 ℃ that stirs was followed the tracks of raw material to performance liquid chromatography (HPLC) in 2 hours and is disappeared.Reaction solution concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-fluoro-5-iodophenol, and productive rate is 74%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=7.35(1H,d,J=8.0Hz),7.50(1H,d,J=12.1Hz),9.75(1H,broad)。
Method embodiment 2 preparation 2-nitro-4-fluoro-5-bromophenols
3-bromo-4-fluorophenol (0.314mol) is dissolved in the acetic acid (200mL).At room temperature, the dropping weight ratio is 90% nitric acid (0.377mol); The mol ratio of nitric acid is 1: 1.2 in 3-bromo-4-fluorophenol and the aqueous nitric acid.Mix even back and react 8 hours down to the disappearance of performance liquid chromatography (HPLC) tracking raw material in 0-5 ℃.Cooling adds 30% sodium hydroxide solution neutralization reaction liquid down to neutral, and (3 * 150mL) extract methylene dichloride, and the organic layer after the merging is used anhydrous magnesium sulfate drying, filter.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-fluoro-5-bromophenol, and productive rate is 86%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=7.65(1H,d,J=11.5Hz),7.74(1H,d,J=8.4Hz),9.86(1H,broad)。
Method embodiment 3 preparation 2-nitro-4-fluoro-5-bromophenols
3-bromo-4-fluorophenol (0.314mol) is dissolved in the sulfuric acid (200mL).At room temperature, drip the nitric acid (0.251mol) of weight percent 95%; The mol ratio of nitric acid is 1: 0.8 in 3-bromo-4-fluorophenol and the aqueous nitric acid.Mix even back and react 7 hours down to the disappearance of performance liquid chromatography (HPLC) tracking raw material in 30-35 ℃.Cooling adds 30% sodium hydroxide solution neutralization reaction liquid down to neutral, and (3 * 150mL) extract methylene dichloride, and the organic layer after the merging is used anhydrous magnesium sulfate drying, filter.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-fluoro-5-bromophenol, and productive rate is 75%, and qualification result is with method embodiment 3.
Method embodiment 4 preparation 2-nitro-4-iodo-5-chlorophenols
4-iodophenol (0.2mol), triethylamine (0.24mol) joins methylene dichloride (300mL), and the back room temperature that stirs drips aceticanhydride (0.20mol).Reflux to raw material 4-iodophenol disappearance (HPLC tracking) then.Reacting liquid filtering, filtrate decompression concentrate and obtain acetic acid 4-iodobenzene phenolic ester.
Acetic acid 4-iodobenzene phenolic ester (0.1mol) is joined in the methylene dichloride (250mL), feed chlorine (0.12mol) under the room temperature.Slowly temperature rising reflux is up to acetic acid 4-iodobenzene phenolic ester disappearance (HPLC tracking).The reaction solution concentrating under reduced pressure adds 25% aqueous sodium hydroxide solution, and is heated to 90 ℃ and stirs 1 hour postcooling after room temperature, regulates pH=2-3 with concentrated hydrochloric acid, leaves standstill, filters, drying obtains 3-chloro-4-iodophenol, and it is 75% that chlorination goes on foot overall yield with hydrolysis two.
3-chloro-4-iodophenol (0.314mol) is dissolved in the dichlorobenzene (200mL).At room temperature, the nitric acid of weight ratio 80% (0.283mol); The mol ratio of nitric acid is 1: 0.90 in 3-chloro-4-iodophenol and the aqueous nitric acid.Mix even back and react 6 hours down to the disappearance of performance liquid chromatography (HPLC) tracking raw material in 30-35 ℃.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-iodo-5-chlorophenol, and productive rate is 89%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=6.70(1H,s),8.33(1H,s),9.84(1H,broad)。
Method embodiment 5 preparation 2-nitro-4-bromo-5-fluorophenols
3-fluoro-4-bromophenol (0.314mol) is dissolved in the methylene dichloride (200mL).At room temperature, the adding weight percent is 95% nitric acid (0.310mol); The mol ratio of nitric acid is 1: 0.99 in 3-fluoro-4-bromophenol and the aqueous nitric acid.After mixing thoroughly, under 20-25 ℃, react and followed the tracks of raw material to performance liquid chromatography (HPLC) in 4 hours and disappear and promptly get, concentrating under reduced pressure, drying obtains yellow solid 2-nitro-4-bromo-5-fluorophenol, and productive rate is 82%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=6.65(1H,d,J=12.0Hz),8.06(1H,d,J=8.4Hz),9.76(1H,broad)。
Method embodiment 6 preparation 2-nitro-4-bromo-5-iodophenols
4-bromophenol (0.2mol), triethylamine (0.24mol) joins methylene dichloride (300mL), and the back room temperature that stirs drips aceticanhydride (0.20mol).Reflux to raw material 4-bromophenol disappearance (HPLC tracking) then.Reacting liquid filtering, filtrate decompression concentrate and obtain acetic acid 4-bromobenzene phenolic ester.
With acetic acid 4-bromobenzene phenolic ester (0.1mol) dissolving methylene dichloride (250mL) solution, stirring at room added iodine (0.12mol) in following 0.5 hour.Slowly reflux to raw material acetic acid 4-bromobenzene phenolic ester disappearance (HPLC tracking).The reaction solution concentrating under reduced pressure; Add 25% aqueous sodium hydroxide solution then, and be heated to 90 ℃ and stir 1 hour postcooling, reaction solution adds concentrated hydrochloric acid and regulates pH=2-3; Leave standstill, filtration, filtration drying obtain 3-iodo-4-bromophenol, chlorination and two step of hydrolysis overall yield are 66%.
3-iodo-4-bromophenol (0.314mol) is dissolved in the trichloromethane (200mL).At room temperature, drip the nitric acid (0.22mol) of weight percent 65%; The mol ratio of nitric acid is 1: 0.7 in 3-iodo-4-bromophenol and the aqueous nitric acid.Mix even back and react 10 hours down to the disappearance of performance liquid chromatography (HPLC) tracking raw material in 25-30 ℃.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-bromo-5-iodophenol, and productive rate is 62%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=7.40(1H,s),7.94(1H,s),9.68(1H,broad)。
Method embodiment 7 preparation 2-nitro-4-iodo-5-bromophenols
The acetic acid 4-iodobenzene phenolic ester (0.1mol) that method embodiment 4 is made joins in methylene dichloride (150mL) solution.Add bromine water (0.10mol) under the stirring at room.Slowly reflux is stirred to raw material acetic acid 4-iodobenzene phenolic ester disappearance (HPLC tracking).The reaction solution concentrating under reduced pressure; Be cooled to and add 25% aqueous sodium hydroxide solution after the room temperature, and be heated to 90 ℃ of stirring heating 2 hours, add concentrated hydrochloric acid behind the cool to room temperature and regulate pH=2-3; Leave standstill, filter, filter drying and obtain 3-bromo-4-iodophenol, bromination and two step of hydrolysis overall yield are 82%.
3-bromo-4-iodophenol (0.314mol) is dissolved in the tetracol phenixin (200mL).At room temperature add weight ratio and be 95% nitric acid (0.408mol); The mol ratio of nitric acid is 1: 1.2 in 3-bromo-4-iodophenol and the aqueous nitric acid.Under 45-50 ℃, react and followed the tracks of raw material to performance liquid chromatography (HPLC) in 2 hours and disappear and promptly get, concentrating under reduced pressure, drying obtains yellow solid 2-nitro-4-iodo-5-bromophenol, and productive rate is 56%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=6.98(1H,s),8.22(1H,s),9.76(1H,broad)。
Method embodiment 8 preparation 2-nitro-4-iodo-5-fluorophenols
3-fluoro-4-iodophenol (0.314mol) is dissolved in benzyl cyanide (150mL).At room temperature, drip the nitric acid (0.471mol) of weight ratio 85%; The mol ratio of nitric acid is 1: 1.5 in 3-fluoro-4-iodophenol and the aqueous nitric acid.The back reaction under 90-100 ℃ that stirs was followed the tracks of raw material to performance liquid chromatography (HPLC) in 1 hour and is disappeared.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-iodo-5-fluorophenol, and productive rate is 45%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=6.40(1H,d,J=11.2Hz),8.30(1H,d,J=8.0Hz),9.80(1H,broad)。
Method embodiment 9 preparation 2-nitro-4-iodo-5-fluorophenols
3-fluoro-4-iodophenol (0.314mol) is dissolved in sym.-tetrachloroethane (150mL).At room temperature, drip the nitric acid (0.471mol) of weight ratio 85%; The mol ratio of nitric acid is 1: 1.5 in 3-fluoro-4-iodophenol and the aqueous nitric acid.The back reaction under 90-100 ℃ that stirs was followed the tracks of raw material to performance liquid chromatography (HPLC) in 1 hour and is disappeared.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-iodo-5-fluorophenol, and productive rate is 45%, and qualification result is with method embodiment 8.
Method embodiment 10 preparation 2-nitro-4-iodo-5-fluorophenols
3-fluoro-4-iodophenol (0.314mol) is dissolved in Nitromethane 99Min. (150mL).At room temperature, drip the nitric acid (0.471mol) of weight ratio 85%; The mol ratio of nitric acid is 1: 1.5 in 3-fluoro-4-iodophenol and the aqueous nitric acid.The back reaction under 90-100 ℃ that stirs was followed the tracks of raw material to performance liquid chromatography (HPLC) in 1 hour and is disappeared.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-iodo-5-fluorophenol, and productive rate is 45%, and qualification result is with method embodiment 8.
Method embodiment 11 preparation 2-nitro-4-iodo-5-fluorophenols
3-fluoro-4-iodophenol (0.314mol) is dissolved in oil of mirbane (150mL).At room temperature, drip the nitric acid (0.471mol) of weight ratio 85%; The mol ratio of nitric acid is 1: 1.5 in 3-fluoro-4-iodophenol and the aqueous nitric acid.The back reaction under 90-100 ℃ that stirs was followed the tracks of raw material to performance liquid chromatography (HPLC) in 1 hour and is disappeared.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-iodo-5-fluorophenol, and productive rate is 45%, and qualification result is with method embodiment 8.
Method embodiment 12 preparation 2-nitro-4-iodo-5-fluorophenols
3-fluoro-4-iodophenol (0.314mol) is dissolved in chlorobenzene (150mL).At room temperature, drip the nitric acid (0.471mol) of weight ratio 85%; The mol ratio of nitric acid is 1: 1.5 in 3-fluoro-4-iodophenol and the aqueous nitric acid.The back reaction under 90-100 ℃ that stirs was followed the tracks of raw material to performance liquid chromatography (HPLC) in 1 hour and is disappeared.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-iodo-5-fluorophenol, and productive rate is 45%, and qualification result is with method embodiment 8.
Method embodiment 13 preparation 2-nitro-4-iodo-5-fluorophenols
3-fluoro-4-iodophenol (0.314mol) is dissolved in acetonitrile (150mL).At room temperature, drip the nitric acid (0.471mol) of weight ratio 85%; The mol ratio of nitric acid is 1: 1.5 in 3-fluoro-4-iodophenol and the aqueous nitric acid.The back reaction under 90-100 ℃ that stirs was followed the tracks of raw material to performance liquid chromatography (HPLC) in 1 hour and is disappeared.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-iodo-5-fluorophenol, and productive rate is 45%, and qualification result is with method embodiment 8.
Method embodiment 14 preparation 2-nitro-4-iodo-5-fluorophenols
3-fluoro-4-iodophenol (0.314mol) is dissolved in vinyl trichloride (150mL).At room temperature, drip the nitric acid (0.471mol) of weight ratio 85%; The mol ratio of nitric acid is 1: 1.5 in 3-fluoro-4-iodophenol and the aqueous nitric acid.The back reaction under 90-100 ℃ that stirs was followed the tracks of raw material to performance liquid chromatography (HPLC) in 1 hour and is disappeared.Concentrating under reduced pressure, drying obtain yellow solid 2-nitro-4-iodo-5-fluorophenol, and productive rate is 45%, and qualification result is with method embodiment 8.
Method embodiment 15 preparation 2-amino-4-bromo-5-fluorophenols
2-nitro-4-bromo-5-fluorophenol (0.1mol) that method embodiment 5 is prepared is dissolved in methyl alcohol (100mL).(21g, 0.2mol), react under 25-30 ℃ to the disappearance of performance liquid chromatography (HPLC) tracking raw material the back that stirs at room temperature to add tindichloride (0.20mol) and hydrochloric acid.Reaction solution uses the sodium hydroxide pH value that neutralizes to be neutrality, filter, filtrating with ETHYLE ACETATE (3 * 200mL) extractions, the organic layer after the merging obtains 2-amino-4-bromo-5-fluorophenol with anhydrous magnesium sulfate drying, underpressure distillation, productive rate is 87%, qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.04(1H,d,J=9.2Hz),7.50(1H,d,J=7.2Hz),11.65(1H,broad)。
Method embodiment 16 preparation 2-amino-4-bromo-5-fluorophenols
2-nitro-4-bromo-5-fluorophenol (0.1mol) that method embodiment 5 is prepared is dissolved in the ethanol (100mL), adds 5%Pd/C (0.2g) at room temperature, carries out shortening, and pressure is 50-55psi.Be stirred to performance liquid chromatography (HPLC) under 20-25 ℃ and follow the tracks of the raw material disappearance.Reacting liquid filtering, filtrate decompression concentrate, drying obtains light yellow solid 2-amino-4-bromo-5-fluorophenol, and productive rate is 91%, and qualification result is with method embodiment 15.
Method embodiment 17 preparation 2-amino-4-bromo-5-fluorophenols
2-nitro-4-bromo-5-fluorophenol (0.1mol) that method embodiment 5 is prepared is dissolved in THF (100mL).At room temperature add LiAlH
4(0.30mol) under 40-45 ℃, react to the disappearance of performance liquid chromatography (HPLC) tracking raw material.The reaction solution cooling drips methyl alcohol down, and (3 * 100mL) extract, and merge organic layer, and anhydrous magnesium sulfate drying, underpressure distillation obtain 2-amino-4-bromo-5-fluorophenol, and productive rate is 82%, and qualification result is with method embodiment 15 with ETHYLE ACETATE fully to stir the back.
The hydrochloride of method embodiment 18 preparation 2-amino-4-bromo-5-fluorophenols
2-amino-4-bromo-5-fluorophenol (0.03moL) that method embodiment 17 is made is dissolved in ETHYLE ACETATE (70mL); Feed hydrogen chloride gas under the room temperature; After 2 hours, reaction solution leaves standstill, filters, drying obtains 2-amino-hydrochloride of 4-bromo-5-fluorophenol, and qualification result is with method embodiment 15.
The acetate of method embodiment 19 preparation 2-amino-4-bromo-5-fluorophenols
The 2-amino that method embodiment 17 makes-4-bromo-5-fluorophenol (0.03moL) is dissolved in the ether (50mL); Stir under the room temperature and add acetic acid (0.05moL) down; Stir leave standstill after 0.5 hour, filter, drying obtains 2-amino-acetate of 4-bromo-5-fluorophenol, qualification result is with method embodiment 15.
Method embodiment 20 preparation 2-amino-4-bromo-5-chlorophenols
2-nitro-4-bromo-5-chlorophenol (0.1moL) is dissolved in methyl alcohol (100mL), and (21g 0.2mol), fully stirs the back and under 20-25 ℃, reacts to the disappearance of performance liquid chromatography (HPLC) tracking raw material at room temperature to add glass putty (0.35mol) and concentrated hydrochloric acid.Reaction solution adds sodium hydroxide and regulates the pH value to neutrality under cooling, ETHYLE ACETATE (3 * 200mL) extract, and merge organic layer, and anhydrous magnesium sulfate drying, underpressure distillation obtain 2-amino-4-bromo-5-chlorophenate hydrochlorate, and yield is 77%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.06(1H,s),7.52(1H,s),11.68(1H,broad)。
Method embodiment 21 preparation 2-amino-4-bromo-5-chlorophenate hydrochlorates
2-nitro-4-bromo-5-chlorophenol (0.1moL) is dissolved in the methyl alcohol (100mL), adds 10%Pd/C (0.15g) at room temperature, carry out shortening, pressure is 100psi.Be stirred to performance liquid chromatography (HPLC) under 30-35 ℃ and follow the tracks of the raw material disappearance.Material after reacting liquid filtering, filtrate decompression concentrate is dissolved in the THF (100mL); Feed hydrogen chloride gas under the room temperature; 1.5 leave standstill, filter after hour, drying obtains 2-amino-4-bromo-5-chlorophenate hydrochlorate, yield is 81%, qualification result is with method embodiment 20.
Method embodiment 22 preparation 2-amino-4-bromo-5-bromophenols
2-nitro-4-bromo-5-bromophenol (0.1mol) is dissolved in Virahol (100mL).At room temperature add zinc powder (0.3mol).Under 45-50 ℃, be stirred to performance liquid chromatography (HPLC) and follow the tracks of the raw material disappearance.Reaction solution is regulated the pH value to neutrality with saturated sodium hydroxide solution, ETHYLE ACETATE (3 * 200mL) extract, and merge organic layer, and anhydrous magnesium sulfate drying, underpressure distillation obtain light yellow solid 2-amino-4-bromo-5-bromophenol, and productive rate is 74%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.00(1H,s),7.46(1H,s),11.60(1H,broad)。
Method embodiment 23 preparation 2-amino-4-iodo-5-iodophenols
2-nitro-4-iodo-5-iodophenol (0.1mol) is dissolved in Virahol (100mL).At room temperature add zinc powder (0.3mol).Under 45-50 ℃, be stirred to performance liquid chromatography (HPLC) and follow the tracks of the raw material disappearance.Reaction solution is regulated the pH value to neutrality with saturated sodium hydroxide solution, ETHYLE ACETATE (3 * 200mL) extract, and merge organic layer, and anhydrous magnesium sulfate drying, underpressure distillation obtain light yellow solid 2-amino-4-iodo-5-iodophenol, and productive rate is 74%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.00(1H,s),7.30(1H,s),11.56(1H,broad)。
Method embodiment 24 preparation 2-amino-4-chloro-5-iodophenols
2-nitro-4-chloro-5-iodophenol (0.1mol) is dissolved in Virahol (100mL).At room temperature add iron powder (0.35mol).Under-10-0 ℃, being stirred to performance liquid chromatography (HPLC) follows the tracks of raw material and disappears.Reaction solution is regulated the pH value to neutrality with saturated sodium hydroxide solution, ETHYLE ACETATE (3 * 200mL) extract, and merge organic layer, and anhydrous magnesium sulfate drying, underpressure distillation obtain light yellow solid 2-amino-4-chloro-5-iodophenol, and productive rate is 70%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.02(1H,s),7.44(1H,s),11.58(1H,broad)。
Method embodiment 25 preparation 2-amino-4-fluoro-5-bromophenol and hydrochlorides thereof
2-nitro-4-fluoro-5-bromophenol (0.05moL) that method embodiment 3 is prepared is dissolved in methyl alcohol (100mL), at room temperature adds Raney Ni (0.20g), carries out shortening, and pressure is 200psi.Be stirred to performance liquid chromatography (HPLC) under 3035 ℃ and follow the tracks of the raw material disappearance.Reacting liquid filtering promptly gets 2-amino-4-fluoro-5-bromophenol solution.It is at room temperature fed hydrogen chloride gas, after 2.0 hours, leave standstill, filter, drying obtains 2-amino-4-fluoro-5-bromophenol hydrochloride, yield is 95%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.04(1H,d,J=7.2Hz),7.50(1H,d,J=9.2Hz),11.62(1H,broad)。
Method embodiment 26 preparation 2-amino-4-bromo-5-iodophenols
2-nitro-4-bromo-5-iodophenol (0.05moL) that method embodiment 6 is prepared is dissolved in the methyl alcohol (100mL), adds Rh (0.15g) at room temperature, carries out shortening, and pressure is 50-55psi.Be stirred to performance liquid chromatography (HPLC) under-10--5 ℃ and follow the tracks of the raw material disappearance.After reacting liquid filtering, filtrate decompression concentrate, promptly get 2-amino-4-bromo-5-iodophenol, qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.00(1H,s),7.36(1H,s),11.62(1H,broad)。
Method embodiment 27 preparation 2-amino-4-iodo-5-bromophenols
2-nitro-4-iodo-5-bromophenol (0.05moL) that method embodiment 7 is prepared is dissolved in the methyl alcohol (100mL), adds Ru (0.15g) at room temperature, carries out shortening, and pressure is 75-80psi.Be stirred to performance liquid chromatography (HPLC) under 0-5 ℃ and follow the tracks of the raw material disappearance.After reacting liquid filtering, filtrate decompression concentrate, promptly get 2-amino-4-iodo-5-bromophenol, qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.02(1H,s),7.42(1H,s),11.60(1H,broad)。
Method embodiment 28 preparation 2-amino-4-fluoro-5-iodophenol and vitriol thereof
Preparation 2-nitro-4-fluoro-5-iodophenol (0.05moL) that method embodiment 1 is prepared is dissolved in methyl alcohol (100mL).(21g, 0.2mol), react under 20-25 ℃ to the disappearance of performance liquid chromatography (HPLC) tracking raw material the back that stirs at room temperature to add iron protochloride (0.175mol) and hydrochloric acid.Reaction solution uses the sodium hydroxide pH value that neutralizes to be neutrality, filters, and (3 * 200mL) extractions, the organic layer after the merging promptly gets 2-amino-4-fluoro-5-iodophenol solution to filtrating with ETHYLE ACETATE.Under stirring at room, drip after sulfuric acid (0.3mol) fully stirs, leave standstill, filter, drying obtains 2-amino-4-fluoro-5-iodophenol vitriol, productive rate is 80%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.00(1H,d,J=7.2Hz),7.46(1H,d,J=9.2Hz),11.62(1H,broad)。
Method embodiment 29 preparation 2-amino-4-iodo-5-chlorophenols
2-nitro-4-iodo-5-chlorophenol (0.1mol) that method embodiment 4 is made is dissolved in Virahol (100mL).At room temperature add zinc powder (0.3mol).Under 45-50 ℃, be stirred to performance liquid chromatography (HPLC) and follow the tracks of the raw material disappearance.Reaction solution is regulated the pH value to neutrality with saturated sodium hydroxide solution, ETHYLE ACETATE (3 * 200mL) extract, and merge organic layer, and anhydrous magnesium sulfate drying, underpressure distillation obtain light yellow solid 2-amino-4-iodo-5-chlorophenol, and productive rate is 80%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.00(1H,s),7.46(1H,s),11.64(1H,broad)。
Method embodiment 30 preparation 2-amino-4-iodo-5-fluorophenols
With what method embodiment 8 made 2-nitro-4-iodo-5-fluorophenol (0.1mol) is dissolved in Virahol (100mL).At room temperature add zinc powder (0.3mol).Under 45-50 ℃, be stirred to performance liquid chromatography (HPLC) and follow the tracks of the raw material disappearance.Reaction solution is regulated the pH value to neutrality with saturated sodium hydroxide solution, ETHYLE ACETATE (3 * 200mL) extract, and merge organic layer, and anhydrous magnesium sulfate drying, underpressure distillation obtain light yellow solid 2-amino-4-iodo-5-fluorophenol, and productive rate is 75%, and qualification result is following:
1H?NMR(DMSO-d
6):δ=4.00(2H,broad),7.04(1H,d,J=9.2Hz),7.50(1H,d,J=7.2Hz),11.62(1H,broad)。