CN1562993A - New technique for synthesizing 7,8 dihydroxyl coumarin - Google Patents
New technique for synthesizing 7,8 dihydroxyl coumarin Download PDFInfo
- Publication number
- CN1562993A CN1562993A CN 200410010752 CN200410010752A CN1562993A CN 1562993 A CN1562993 A CN 1562993A CN 200410010752 CN200410010752 CN 200410010752 CN 200410010752 A CN200410010752 A CN 200410010752A CN 1562993 A CN1562993 A CN 1562993A
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- China
- Prior art keywords
- crude product
- precipitation
- hours
- frozen water
- elaboration
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000002194 synthesizing effect Effects 0.000 title abstract 2
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 title description 4
- 229960000956 coumarin Drugs 0.000 title 1
- 235000001671 coumarin Nutrition 0.000 title 1
- 239000012043 crude product Substances 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000001556 precipitation Methods 0.000 claims description 20
- ATEFPOUAMCWAQS-UHFFFAOYSA-N 7,8-dihydroxycoumarin Chemical compound C1=CC(=O)OC2=C(O)C(O)=CC=C21 ATEFPOUAMCWAQS-UHFFFAOYSA-N 0.000 claims description 12
- YBGKGTOOPNQOKH-UHFFFAOYSA-N daphnetin Natural products OC1=CC=CC2=C1OC(=O)C=C2O YBGKGTOOPNQOKH-UHFFFAOYSA-N 0.000 claims description 11
- 239000000706 filtrate Substances 0.000 claims description 10
- 238000003786 synthesis reaction Methods 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 229940079877 pyrogallol Drugs 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000005457 ice water Substances 0.000 abstract 3
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 2
- 239000007788 liquid Substances 0.000 abstract 2
- 239000002244 precipitate Substances 0.000 abstract 2
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 abstract 1
- GOLORTLGFDVFDW-UHFFFAOYSA-N 3-(1h-benzimidazol-2-yl)-7-(diethylamino)chromen-2-one Chemical compound C1=CC=C2NC(C3=CC4=CC=C(C=C4OC3=O)N(CC)CC)=NC2=C1 GOLORTLGFDVFDW-UHFFFAOYSA-N 0.000 abstract 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 239000012141 concentrate Substances 0.000 abstract 1
- 238000001816 cooling Methods 0.000 abstract 1
- 239000012467 final product Substances 0.000 abstract 1
- 235000011090 malic acid Nutrition 0.000 abstract 1
- 239000001630 malic acid Substances 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Abstract
This invention relates to a process for synthesizing 7,-dihydoxy coumarin, by using pyrogallic acid and malic acid as raw material, in molar ratio of (1:0.9-1.2), mixing evenly in reactor, adding 1.5-3.5 times of that of concentrate sulfuric acid, heating and reacting for 15 minites-3hrs, cooling in ice water, settling, filtration. Said precipitate is then washed with ice water to pH=3-6, after drying to obtain crude product. Said crude product is the put into a vessel, putting into water, heat for 2-4 hrs., filtering and removing insoluble substance, then being boiled with active carbon to obtain a liquid. Said liquid is layed aside to obtain precipitate, being washed by ice water to pH=3-6, drying to obtain final product with yield of 35-70%, with pureness of 90-99.5%.
Description
Technical field:
The present invention is to improvement existing 7,8-dihydroxycoumarin synthesis technique, discloses a kind of 7,8-dihydroxycoumarin new synthesis process, belongs to tonka bean camphor chemical synthesis process technical field.
Background technology:
At present, use organic solvents such as ethanol, ether in the chemical synthesis process process of traditional tonka bean camphor, not only increase raw materials cost in industrial production, contaminate environment, technology are also very unstable, and yield is lower, can't satisfy the suitability for industrialized production needs.
Summary of the invention:
The invention provides a kind of 7,8-dihydroxycoumarin new synthesis process, have with low cost, pollute little, characteristics such as process stabilizing.
Technical matters of the present invention may further comprise the steps:
One, 7,8-dihydroxycoumarin crude product is synthetic
Pyrogallol and oxysuccinic acid are mixed to reaction vessel in mol ratio 1: 0.9-1.2, add the 1.5-3.5 times of vitriol oil, heat temperature raising to 90 ℃-130 ℃, reacted 15 minutes to 3 hours, and be cooled in the frozen water, placed 48 hours, precipitation, filter, filter precipitation through frozen water wash to PH=3-6 at 105 ℃ of dry crude products, the crude product yield is 30%-70%.
Two, crude product is refining
Crude product is dropped in the Sandwich pot, in 1: the 70-200 ratio adds water, 80 ℃-120 ℃ of steam heating 2-4 hour, filtering insolubles, filtrate was boiled 15 minutes through the 0.05%-15% gac, getting faint yellow filtrate, placed 48 hours, separate out precipitation. precipitation is washed to PH=3-6 through frozen water, oven dry, get elaboration, the elaboration yield is 35%-70%, and elaboration content is 90%-99.5%.
7,8-dihydroxycoumarin crude product synthesis temperature 105 ℃, 110 ℃, 115 ℃, the time, the crude product yield is the highest.Specifically see Table 1
Table 1
The steam heating temperature added gac by 1% added-time when 7,8 dihydroxycoumarins were refining in the time of 98 ℃, 100 ℃, elaboration yield height, and the content height, proterties is good.Specifically see Table 2
Table 2
Positively effect of the present invention is: the synthetic route technology stability that provides is good, the product yield height, and the purity height, the demand of suitable industrialized production can be brought bigger social benefit and economic benefit to society.
Embodiment:
The following example is intended to further describe for example the present invention, rather than limit the present invention by any way, under the prerequisite that does not deviate from the spirit and principles in the present invention, any change or change that those of ordinary skills that the present invention did are realized easily all will fall within the claim scope that awaits the reply of the present invention.
Embodiment 1
7,8-dihydroxycoumarin crude product is synthetic:
Get pyrogallol 500 grams and oxysuccinic acid 450 grams, mix to reaction vessel, add the 1000ml vitriol oil, heat temperature raising to 110 ℃, reacted 2 hours, be cooled in the frozen water, placed 48 hours, precipitation, filter, filter to such an extent that precipitation is washed to PH=3-6 through frozen water, at 105 ℃ of dry crude product 253 grams that get, yield is 36.6%.
Making with extra care of crude product:
Crude product 253 grams are dropped in the Sandwich pot, add water 25000ml, 100 ℃ of steam heating 4 hours, filtering insolubles, filtrate was boiled 15 minutes through 1% gac, getting faint yellow filtrate, placed 48 hours, separate out precipitation. precipitation is washed to PH=3-6 through frozen water, oven dry, getting elaboration 117 grams, is 46.1% with respect to the crude product yield, and content is 95.1%.
Embodiment 2
7,8-dihydroxycoumarin crude product is synthetic:
Get pyrogallol 500 grams and oxysuccinic acid 530 grams, mix to reaction vessel, add the 1100ml vitriol oil, heat temperature raising to 115 ℃, reacted 2 hours, be cooled in the frozen water, placed 48 hours, precipitation, filter, filter to such an extent that precipitation is washed to PH=3-6 through frozen water, at 105 ℃ of dry crude product 259 grams that get, yield is 37.6%.
Making with extra care of crude product:
Crude product 259 grams are dropped in the Sandwich pot, add water 20000ml, 98 ℃ of steam heating 4 hours, filtering insolubles, filtrate was boiled 15 minutes through 1% gac, getting faint yellow filtrate, placed 48 hours, separate out precipitation. precipitation is washed to PH=3-6 through frozen water, oven dry, getting elaboration 121 grams, is 46.7% with respect to the crude product yield, and content is 95.4%.
Embodiment 3
7,8-dihydroxycoumarin crude product is synthetic:
Get pyrogallol 500 grams and oxysuccinic acid 600 grams, mix to reaction vessel, add the 1200ml vitriol oil, heat temperature raising to 105 ℃, reacted 2 hours, be cooled in the frozen water, placed 48 hours, precipitation, filter, filter to such an extent that precipitation is washed to PH=3-6 through frozen water, at 105 ℃ of dry crude product 256 grams that get, yield is 37.2%.
Making with extra care of crude product:
Crude product 256 grams are dropped in the Sandwich pot, add water 25000ml, 100 ℃ of steam heating 4 hours, filtering insolubles, filtrate was boiled 15 minutes through 1% gac, getting faint yellow filtrate, placed 48 hours, separate out precipitation. precipitation is washed to PH=3-6 through frozen water, oven dry, getting elaboration 119 grams, is 46.5% with respect to the crude product yield, and content is 95.8%.
Claims (2)
1, a kind of 7,8-dihydroxycoumarin new synthesis process may further comprise the steps:
7,8-dihydroxycoumarin crude product is synthetic
Pyrogallol and oxysuccinic acid are mixed to reaction vessel in mol ratio 1: 0.9-1.2, add the 1.5-3.5 times of vitriol oil, heat temperature raising to 90 ℃-130 ℃, reacted 15 minutes-3 hours, be cooled in the frozen water, placed 48 hours, precipitation, filter, filter precipitation through frozen water wash to PH=3-6 at 105 ℃ of dry crude products;
Crude product is dropped in the Sandwich pot, and in 1: the 70-200 ratio adds water, 80 ℃-120 ℃ of steam heating 2-4 hour, the filtering insolubles, filtrate was boiled 15 minutes through the 0.05%-15% gac, got faint yellow filtrate, placed 48 hours, separate out precipitation, precipitation is washed to PH=3-6 through frozen water, and oven dry gets elaboration, the elaboration yield is 35%-70%, and elaboration content is 90%-99.5%.
2, the product of producing according to the described synthesis technique of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100107522A CN100429211C (en) | 2004-03-26 | 2004-03-26 | New technique for synthesizing 7,8 dihydroxyl coumarin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100107522A CN100429211C (en) | 2004-03-26 | 2004-03-26 | New technique for synthesizing 7,8 dihydroxyl coumarin |
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| Publication Number | Publication Date |
|---|---|
| CN1562993A true CN1562993A (en) | 2005-01-12 |
| CN100429211C CN100429211C (en) | 2008-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100107522A Expired - Lifetime CN100429211C (en) | 2004-03-26 | 2004-03-26 | New technique for synthesizing 7,8 dihydroxyl coumarin |
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| Country | Link |
|---|---|
| CN (1) | CN100429211C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404524C (en) * | 2005-07-22 | 2008-07-23 | 中国医学科学院放射医学研究所 | High purity cnidicin and its preparation method and medicinal composition using said compound as active component |
| CN1827612B (en) * | 2006-03-31 | 2012-05-30 | 吉林省西点药业科技发展股份有限公司 | New process for synthesizing daphnetin |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1259913C (en) * | 2002-04-02 | 2006-06-21 | 中国预防医学科学院寄生虫病研究所 | Daphnetin and arteannuin derivative compatible anti-malaria composition |
-
2004
- 2004-03-26 CN CNB2004100107522A patent/CN100429211C/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100404524C (en) * | 2005-07-22 | 2008-07-23 | 中国医学科学院放射医学研究所 | High purity cnidicin and its preparation method and medicinal composition using said compound as active component |
| CN1827612B (en) * | 2006-03-31 | 2012-05-30 | 吉林省西点药业科技发展股份有限公司 | New process for synthesizing daphnetin |
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| Publication number | Publication date |
|---|---|
| CN100429211C (en) | 2008-10-29 |
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Granted publication date: 20081029 |