CN103113270A - Synthesis method of 4-(3-benzyloxy-phenylsulfanyl)-2-chloro-vinylbenzene - Google Patents

Synthesis method of 4-(3-benzyloxy-phenylsulfanyl)-2-chloro-vinylbenzene Download PDF

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CN103113270A
CN103113270A CN2012104841168A CN201210484116A CN103113270A CN 103113270 A CN103113270 A CN 103113270A CN 2012104841168 A CN2012104841168 A CN 2012104841168A CN 201210484116 A CN201210484116 A CN 201210484116A CN 103113270 A CN103113270 A CN 103113270A
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chloro
benzyloxy
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phenyl sulfanyl
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徐余冬
丁炬平
张仁延
余强
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Cgenetech Suzhou China Co Ltd
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Cgenetech Suzhou China Co Ltd
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Abstract

The invention discloses a synthesis method of 4-(3-benzyloxy-phenylsulfanyl)-2-chloro-vinylbenzene. 2-chloro-4-fluorophenylacetaldehyde and 2-thiophenol are used as raw materials, the 2-chloro-4-fluorophenylacetaldehyde and the 2-thiophenol are butt linked by using potassium carbonate, benzylbromide is added to protect a phenolic group, and double bond is generated by means of phosphorus ylide reaction to obtain a target product of the 4-(3-benzyloxy-phenylsulfanyl)-2-chloro-vinylbenzene. By virtue of the method, the synthesis of the 4-(3-benzyloxy-phenylsulfanyl)-2-chloro-vinylbenzene is realized, and the synthesis method is short in path, stable in condition and low in cost.

Description

The synthetic method of a kind of 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene
Technical field
The present invention relates to a kind of 4-(3-benzyloxy-phenyl sulfanyl)-synthesis technology of 2-chloro-1-vinyl benzene improves, and belongs to medicine, chemical technology field.
Background technology
4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene is a kind of white solid, is important medicine intermediate, raw material.
Now find 4-(3-benzyloxy-phenyl sulfanyl)-synthesis technique of 2-chloro-1-vinyl benzene; to adopt take 2-chloro-4 fluorobenzene acetaldehyde and 2-mercapto-phenol as raw material; after upper Bian bromine protection phenolic group after the salt of wormwood docking; generate two keys with the phosphorus ylide reaction, obtain target product 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene.Realized 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene synthetic, and the path is short, and cost is low.
Summary of the invention
For domestic without bibliographical information, the present invention take 2-chloro-4 fluorobenzene acetaldehyde and 2-mercapto-phenol under the prerequisite of raw material, after testing, finally determined the technique circuit of this patent.The trial circuit is, take 2-chloro-4 fluorobenzene acetaldehyde and 2-mercapto-phenol as raw material, after upper Bian bromine protection phenolic group after the salt of wormwood docking, generates two keys with the phosphorus ylide reaction, obtains target product 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene.Adopt this technique, realized 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene synthetic.
The synthetic method of 4-(3-benzyloxy of the present invention-phenyl sulfanyl)-2-chloro-1-vinyl benzene; that after adopting improvement, route reacts; take 2-chloro-4 fluorobenzene acetaldehyde and 2-mercapto-phenol as raw material; after upper Bian bromine protection phenolic group after the salt of wormwood docking; generate two keys with the phosphorus ylide reaction, obtain target product 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene.
The synthetic method of above-mentioned 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene; it is characterized in that: described improvement is take 2-chloro-4 fluorobenzene acetaldehyde and 2-mercapto-phenol as raw material; after upper Bian bromine protection phenolic group after the salt of wormwood docking; generate two keys with the phosphorus ylide reaction, obtain target product 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene.Take this stable route to obtain higher yield.
The synthetic method of above-mentioned 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene is characterized in that: described employing generates two keys with the phosphorus ylide reaction.
The synthetic method of above-mentioned 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene; it is characterized in that: the synthetic method of described 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene makes: add 2-chloro-4 fluorobenzene acetaldehyde (5 gram) in the there-necked flask of 250 ml; salt of wormwood (8.7 gram); methyl-sulphoxide (80 ml) heats up 50 ℃ under nitrogen protection.Then 2-mercapto-phenol (4 gram) is dissolved in 30 ml tetrahydrofuran (THF)s, adds at a slow speed (about 30 minutes) in bottle.Control simultaneously temperature and be no more than 50 ℃.Reaction is 1.5 hours under 50 ℃.Be cooled to 0 ℃.Add 1 N hydrochloric acid.Ethyl acetate extraction, dry filter was spin-dried for post and gets 2-chloro-4-(3-hydroxyl-phenyl sulfanyl)-phenyl aldehyde (6.14 g).Add 2-chloro-4-(3-hydroxyl-phenyl sulfanyl in the there-necked flask of 250 ml)-phenyl aldehyde (6.14 gram); salt of wormwood (7.63 gram); acetonitrile (100 ml); under nitrogen protection; be cooled to 0 ℃. 5.55 gram benzyl bromines are dissolved in the acetonitrile of 30ml; add at a slow speed in bottle (about 30 minutes) to finish, be warming up to 45 ℃ and stirred 1.5 hours.Be cooled to 0 ℃ and add 10% citric acid.Ethyl acetate extraction, drying were spin-dried for post and got 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-aldehyde-base benzene 6.59 grams.Add methyltriphenylphospbromide bromide phosphorus (7.96 gram) in 250 ml there-necked flasks, tetrahydrofuran (THF) (90 ml) is cooled to 0 ℃, adds 2.4 M butyllithiums (9.3 ml) (time was controlled at about 30 minutes). then be warming up to stirring at room 1 hour.Add compound 4(6.59 gram under 0 ℃) solution of 30 ml tetrahydrofuran (THF)s.Then be warming up to stirring at room 3 hours.Add saturated ammonium chloride, ethyl acetate extraction, drying was spin-dried for post, got 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene (5.48 gram).
Above-mentioned with 2-chloro-4 fluorobenzene acetaldehyde, 2-mercapto-phenol, Bian bromine and methyltriphenylphospbromide bromide phosphorus etc. are the synthetic 4-(3-benzyloxy of raw material-phenyl sulfanyl)-chemical reaction and the reaction formula of 2-chloro-1-vinyl benzene is as follows:
(1) reaction equation of 2-chloro-4 fluorobenzene acetaldehyde and 2-mercapto-phenol is:
Figure 2012104841168100002DEST_PATH_IMAGE001
(2) reaction is completed, after purifying and the reaction equation of Bian bromine be:
Figure 459818DEST_PATH_IMAGE002
(3) reaction is completed, and after purifying with the reaction equation of methyl triphenyl bromine phosphine is again:
Figure 2012104841168100002DEST_PATH_IMAGE003
Embodiment
Embodiment:
The synthetic method of described 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene makes: add 2-chloro-4 fluorobenzene acetaldehyde (5 gram) in the there-necked flask of 250 ml; salt of wormwood (8.7 gram); methyl-sulphoxide (80 ml) heats up 50 ℃ under nitrogen protection.Then 2-mercapto-phenol (4 gram) is dissolved in 30 ml tetrahydrofuran (THF)s, adds at a slow speed (about 30 minutes) in bottle.Control simultaneously temperature and be no more than 50 ℃.Reaction is 1.5 hours under 50 ℃.Be cooled to 0 ℃.Add 1 N hydrochloric acid.Ethyl acetate extraction, dry filter was spin-dried for post and gets 2-chloro-4-(3-hydroxyl-phenyl sulfanyl)-phenyl aldehyde (6.14 gram).Add 2-chloro-4-(3-hydroxyl-phenyl sulfanyl in the there-necked flask of 250 ml)-phenyl aldehyde (6.14 gram); salt of wormwood (7.63 gram); acetonitrile (100 ml); under nitrogen protection; be cooled to 0 ℃. 5.55 gram benzyl bromines are dissolved in the acetonitrile of 30ml; add at a slow speed in bottle (about 30 minutes) to finish, be warming up to 45 ℃ and stirred 1.5 hours.Be cooled to 0 ℃ and add 10% citric acid.Ethyl acetate extraction, drying were spin-dried for post and got 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-aldehyde-base benzene 6.59 grams.Add methyltriphenylphospbromide bromide phosphorus (7.96 gram) in 250 ml there-necked flasks, tetrahydrofuran (THF) (90 ml) is cooled to 0 ℃, adds 2.4 M butyllithiums (9.3 ml) (time was controlled at about 30 minutes). then be warming up to stirring at room 1 hour.Add compound 4(6.59 gram under 0 ℃) solution of 30 ml tetrahydrofuran (THF)s.Then be warming up to stirring at room 3 hours.Add saturated ammonium chloride, ethyl acetate extraction, drying was spin-dried for post, got 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene (5.48 gram).

Claims (4)

1.4-(3-the synthetic method of benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene; that after adopting improvement, route reacts; take 2-chloro-4 fluorobenzene acetaldehyde and 2-mercapto-phenol as raw material; after upper Bian bromine protection phenolic group after the salt of wormwood docking; generate two keys with the phosphorus ylide reaction, obtain target product 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene.
2. the synthetic method of 4-(3-benzyloxy-phenyl sulfanyl as claimed in claim)-2-chloro-1-vinyl benzene; it is characterized in that: described improvement is take 2-chloro-4 fluorobenzene acetaldehyde and 2-mercapto-phenol as raw material; after upper Bian bromine protection phenolic group after the salt of wormwood docking; generate two keys with the phosphorus ylide reaction; obtain target product 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene, route after this improvement.
3. the synthetic method of 4-(3-benzyloxy-phenyl sulfanyl as claimed in claim)-2-chloro-1-vinyl benzene, it is characterized in that: described employing generates two keys with the phosphorus ylide reaction.
4. the synthetic method of 4-(3-benzyloxy-phenyl sulfanyl as claimed in claim)-2-chloro-1-vinyl benzene, it is characterized in that: the synthetic method of described 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene makes: add 2-chloro-4 fluorobenzene acetaldehyde (5 gram) in the there-necked flask of 250 ml, salt of wormwood (8.7 gram), methyl-sulphoxide (80 ml), heat up 50 ℃ under nitrogen protection, then 2-mercapto-phenol (4 gram) is dissolved in 30 ml tetrahydrofuran (THF)s, add at a slow speed (about 30 minutes) in bottle, control simultaneously temperature and be no more than 50 ℃, reaction is 1.5 hours under 50 ℃, be cooled to 0 ℃, add 1 N hydrochloric acid, ethyl acetate extraction, dry filter, be spin-dried for post and got 2-chloro-4-(3-hydroxyl-phenyl sulfanyl)-phenyl aldehyde (6.14 g), add 2-chloro-4-(3-hydroxyl-phenyl sulfanyl in the there-necked flask of 250 ml)-phenyl aldehyde (6.14 gram), salt of wormwood (7.63 gram), acetonitrile (100 ml), under nitrogen protection, be cooled to 0 ℃. 5.55 gram benzyl bromines are dissolved in the acetonitrile of 30ml, add at a slow speed in bottle (about 30 minutes) to finish, being warming up to 45 ℃ stirred 1.5 hours, be cooled to 0 ℃ and add 10% citric acid, ethyl acetate extraction, drying was spin-dried for post and got 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-aldehyde-base benzene 6.59 grams, add methyltriphenylphospbromide bromide phosphorus (7.96 gram) in 250 ml there-necked flasks, tetrahydrofuran (THF) (90 ml), be cooled to 0 ℃, add 2.4 M butyllithiums (9.3 ml) (time was controlled at about 30 minutes). then be warming up to stirring at room 1 hour, add compound 4(6.59 gram under 0 ℃) solution of 30 ml tetrahydrofuran (THF)s, then be warming up to stirring at room 3 hours, add saturated ammonium chloride, ethyl acetate extraction, drying was spin-dried for post, get 4-(3-benzyloxy-phenyl sulfanyl)-2-chloro-1-vinyl benzene (5.48 gram).
CN2012104841168A 2012-11-26 2012-11-26 Synthesis method of 4-(3-benzyloxy-phenylsulfanyl)-2-chloro-vinylbenzene Pending CN103113270A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003029205A1 (en) * 2001-09-27 2003-04-10 Kyorin Pharmaceutical Co., Ltd. Diaryl sulfide derivative, addition salt thereof, and immunosuppressant
WO2006041019A1 (en) * 2004-10-12 2006-04-20 Kyorin Pharmaceutical Co., Ltd. Process for producing 2-amino-2-[2-[4-(3-benzyloxy­phenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol hydrochloride or hydrate thereof and intermediate for the same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003029205A1 (en) * 2001-09-27 2003-04-10 Kyorin Pharmaceutical Co., Ltd. Diaryl sulfide derivative, addition salt thereof, and immunosuppressant
WO2006041019A1 (en) * 2004-10-12 2006-04-20 Kyorin Pharmaceutical Co., Ltd. Process for producing 2-amino-2-[2-[4-(3-benzyloxy­phenylthio)-2-chlorophenyl]ethyl]-1,3-propanediol hydrochloride or hydrate thereof and intermediate for the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MASAO CHINO 等: "An efficient total synthsis of a sphingosine-1-phosphate receptor agonist KRP-203", 《TETRAHEDRON》 *

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Application publication date: 20130522