CN1043346C - 季酮酸烷酯的制备方法 - Google Patents
季酮酸烷酯的制备方法 Download PDFInfo
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- CN1043346C CN1043346C CN93106843A CN93106843A CN1043346C CN 1043346 C CN1043346 C CN 1043346C CN 93106843 A CN93106843 A CN 93106843A CN 93106843 A CN93106843 A CN 93106843A CN 1043346 C CN1043346 C CN 1043346C
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/40—Radicals substituted by oxygen atoms
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/60—Two oxygen atoms, e.g. succinic anhydride
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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- Furan Compounds (AREA)
Abstract
本发明揭示了制备式Ⅰ所示季酮酸烷酯
(其中R为C1-C6烷基)的新方法,它是在第一步反应中,在强酸存在下,将4-卤代乙酰乙酸烷酯与亚硫酸二烷基酯反应,转化为4-卤代-3-烷氧基-2E-丁烯酸烷酯;然后在第二步反应中,将其与甲酸盐和强酸进行环化而生成最终产物。
Description
季酮酸烷酯是制造生物活性药物(维生素、性激素等)的重要中间产品(Pelter等,J.Chem.Soc.Perkin Trans I,1987,第717-742页)。
至今已知有许多制备季酮酸烷酯的方法。例如欧洲专利EP-A 409147描述一种从4-氯-3-乙氧基-2E-丁烯酸烷酯制备季酮酸烷基酯的方法,此法系在190-260℃之间的温度下,于惰性气体气氛中,在无溶剂存在情况下,将4-氯-3-乙氧基-2E-丁烯酸烷酯转化为相应的季酮酸烷酯。
此法的最大缺点是在大规模工业中不能实行,并且会产生氯乙烷,这是一种令人担忧的副产物。
本发明的任务是提供一种可进行大工业生产而又经济的制备季酮酸烷酯的方法。
这一任务是用新方法来完成的。
(RO)2S=O Ⅲ其中R定义如前述,转化为相应的中间体酮缩醇酯,然后将其在强酸存在下转化成4-卤代-3-烷氧基-2E-丁烯酸烷酯,其结构式为其中X,R和R1定义如前述;然后第二步再将其与甲酸盐和强酸环化得到式Ⅰ最终产物。
本方法的起始物质4-卤代-乙酰乙酸C1-C6烷酯可在工业化生产中,从双烯酮制得,其中卤素得自相应的酰基氯。
4-卤代-乙酰乙酸烷酯的合适代表是4-卤代-乙酰乙酸-甲酯、-乙酯、-丙酯、-异丙酯或丁酯,其中卤素表示溴原子或氯原子。
较好是使用4-氯乙酰乙酸乙酯,
亚硫酸二烷基酯(结构式Ⅲ)可就地通过亚硫酰二氯与相应的脂族醇转化而生成。脂族醇可使用甲醇、乙醇、丙醇、异丙醇或丁醇,较好是用乙醇,照此,生成的亚硫酸二乙酯即作为亚硫酸二烷基酯。为使之就地形成亚硫酸二烷基酯,要使用过量的乙醇,较好是2.5-4mol/mol亚硫酰二氯。
为了生成酮缩醇酯,第一步的转化反应宜在-10-60℃的温度范围内进行。
接着,生成4-卤代-3-烷氧基-2E-丁烯酸烷酯(式Ⅳ)的转化反应是在强酸存在条件下,于60-120℃的适宜温度下进行的。
在反应中生成的低沸点组份以蒸馏法去除。
强酸以采用甲磺酸或对甲苯磺酸为宜,较好是采用甲磺酸。
强酸以催化量20-30mmol/mol 4-卤代-乙酰乙酸烷酯(式Ⅱ)加入。
一般反应3-6小时后可分离出式Ⅳ所示4-卤代-3-烷氧基-2E-丁烯酸烷酯或者直接用于第二步反应。优选的是4-卤代-3-烷氧基-2E-丁烯酸烷酯不经分离直接用于第二步反应。
第二步,4-卤代-3-烷氧基-2E-丁烯酸烷酯环化生成季酮酸是用强酸和甲酸盐进行的。
强酸可采用在第一步反应中所述的相同的甲磺酸或P-甲苯磺酸。
甲酸盐可使用碱金属甲酸盐或碱土金属甲酸盐,碱金属甲酸盐可采用甲酸钠或甲酸钾,碱土金属甲酸盐可采用甲酸镁或甲酸钙。
甲酸盐的用量要过量于4-卤代-3-烷氧基-2E-丁烯酸烷酯(式Ⅳ)的量,较好为过量于4-卤代-3-烷氧基-2E-丁烯酸烷酯5-15重量%。
在第二步反应中采用极性的非质子传递溶剂。
极性的非质子传递的溶剂可采用二甲基甲酰胺和水的混合物。
较好的是二甲基甲酰胺与水以1.5-1.8的克分子比混和。
第二步反应在110-130℃温度下进行,较好的是在115-120℃时进行。
在反应10-15小时后可以用本专业的方法将季酮酸烷酯以好的得率分离出来。
实施例
季酮酸烷酯的制备
取4-氯乙酰乙酸乙酯(447.0kg;2.7kmol)和无水乙醇(621.4升),于惰性气体气氛下,在温度为-5--10℃时加入亚硫酰二氯(349.2kg;2.94kmol),使温度不超过20℃,在加入亚硫酰二氯后,温度从20℃升至60℃(0.3℃/分钟),加入甲磺酸(2.56kg;26mol)后温度从60℃升至120℃,收集蒸发的乙醇,然后在减压和110-120℃温度下将酮缩醇酯转化为4-氯-3-乙氧基-2E-丁烯酸乙酯,蒸出所生成的乙醇。
接着,将全部物料冷却至40℃,备于第二步反应用,然后在惰性气体气氛下加入甲磺酸(2.5kg;26mol)、甲酸钠(189.2kg;2.74kmol)、二甲基甲酰胺(513.4升)和水(75.8升)。
将内部温度提高至120℃后,将反应混和物搅拌12小时,将反应时生成的低沸点组份蒸馏去除。接着在30-50毫巴(mbar)下蒸馏去除二甲基甲酰胺。
将反应混和物用丙酮(500升)悬浮,过滤,并再用丙酮洗涤。
接着再蒸馏去除丙酮。
将含季酮酸乙酯的溶液冷却至20℃。
制得328.2kg含量为75%(按照GC法)的季酮酸乙酯(粗制品),相当于得率为75%。
Claims (10)
2.根据权利要求1的方法,其特征在于,在第一步反应中采用4-氯乙酰乙酸乙酯作为结构式Ⅱ的4-卤代-乙酰乙酸烷酯。
3.根据权利要求1的方法,其特征在于,在第一步采用亚硫酸二乙酯作为结构式Ⅲ的亚硫酸二烷基酯。
4.根据权利要求1或3的方法,其特征在于,在第一步反应中亚硫酰二氯与相应的脂族醇就地转化成结构式Ⅲ的亚硫酸二烷基酯。
5.根据权利要求1的方法,其特征在于,在第一步转化成中间形成的酮缩醇酯的反应是在-10-60℃下进行的,然后转化成结构式Ⅳ的4-卤代-3-烷氧基-2E-丁烯酸烷酯的反应是在60-120℃时进行的。
6.根据权利要求1的方法,其特征在于,在反应的第一步和第二步中用甲磺酸或P-甲苯磺酸作为强酸。
7.根据权利要求1的方法,其特征在于,在第二步反应中用碱金属甲酸盐或碱土金属甲酸盐作为甲酸盐。
8.根据权利要求1的方法,其特征在于,第二步反应是在二甲基甲酰胺和水的混合物中进行的。
9.根据权利要求1的方法,其特征在于,第二步反应是在110-130℃下进行的。
10.根据权利要求1的方法,其特征在于,进行转化反应时不须分离式Ⅳ中间产物。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1846/92 | 1992-06-11 | ||
CH184692 | 1992-06-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1083482A CN1083482A (zh) | 1994-03-09 |
CN1043346C true CN1043346C (zh) | 1999-05-12 |
Family
ID=4219984
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN93106843A Expired - Fee Related CN1043346C (zh) | 1992-06-11 | 1993-06-05 | 季酮酸烷酯的制备方法 |
Country Status (17)
Country | Link |
---|---|
US (1) | US5310947A (zh) |
EP (1) | EP0573999B1 (zh) |
JP (1) | JP3166017B2 (zh) |
KR (1) | KR940000451A (zh) |
CN (1) | CN1043346C (zh) |
AT (1) | ATE170181T1 (zh) |
AU (1) | AU666729B2 (zh) |
CA (1) | CA2092347A1 (zh) |
CZ (1) | CZ282943B6 (zh) |
DE (1) | DE59308915D1 (zh) |
DK (1) | DK0573999T3 (zh) |
ES (1) | ES2119835T3 (zh) |
FI (1) | FI106124B (zh) |
HU (1) | HU213832B (zh) |
IL (1) | IL105938A (zh) |
PL (1) | PL173073B1 (zh) |
SK (1) | SK280170B6 (zh) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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US5781081A (en) * | 1995-09-01 | 1998-07-14 | Ngk Spark Plug Co., Ltd. | LC-type dielectric filter having an inductor on the outermost layer and frequency adjusting method therefor |
CA2211503A1 (en) * | 1996-09-04 | 1998-03-04 | Josef Schroer | Process for the preparation of tetronic acid derivatives |
JP2001256751A (ja) * | 2000-03-13 | 2001-09-21 | Sony Corp | シャッター及びこれを有するディスクカートリッジ |
US7373951B2 (en) | 2004-09-07 | 2008-05-20 | Fisher Controls International Llc | Control valve having “C” seal |
JP5763231B1 (ja) | 2014-02-18 | 2015-08-12 | Whill株式会社 | 操作装置および電動モビリティ |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4880940A (en) * | 1985-09-24 | 1989-11-14 | Lonza Ltd. | 4-alkoxy-3-pyrrolin-2-on-1-yl acetic acid alkyl esters |
US5144047A (en) * | 1989-07-20 | 1992-09-01 | Lonza Ltd. | Process for the production of tetronic acid alkyl esters |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2845037C2 (de) * | 1978-10-16 | 1980-12-11 | Fa. Dr. Willmar Schwabe, 7500 Karlsruhe | Verfahren zur Herstellung von Tetronsäuremethylester |
CH668423A5 (de) * | 1986-06-19 | 1988-12-30 | Lonza Ag | Verfahren zur herstellung von 4-alkoxy-3-pyrrolin-2-onen. |
-
1993
- 1993-06-02 AU AU39994/93A patent/AU666729B2/en not_active Ceased
- 1993-06-05 CN CN93106843A patent/CN1043346C/zh not_active Expired - Fee Related
- 1993-06-07 CA CA002092347A patent/CA2092347A1/en not_active Abandoned
- 1993-06-07 IL IL105938A patent/IL105938A/xx not_active IP Right Cessation
- 1993-06-08 US US08/072,955 patent/US5310947A/en not_active Expired - Fee Related
- 1993-06-08 JP JP13732693A patent/JP3166017B2/ja not_active Expired - Fee Related
- 1993-06-09 AT AT93109318T patent/ATE170181T1/de active
- 1993-06-09 DK DK93109318T patent/DK0573999T3/da active
- 1993-06-09 DE DE59308915T patent/DE59308915D1/de not_active Expired - Fee Related
- 1993-06-09 ES ES93109318T patent/ES2119835T3/es not_active Expired - Lifetime
- 1993-06-09 PL PL93299256A patent/PL173073B1/pl unknown
- 1993-06-09 EP EP93109318A patent/EP0573999B1/de not_active Expired - Lifetime
- 1993-06-10 KR KR1019930010704A patent/KR940000451A/ko not_active Application Discontinuation
- 1993-06-10 SK SK598-93A patent/SK280170B6/sk unknown
- 1993-06-10 CZ CZ931129A patent/CZ282943B6/cs not_active IP Right Cessation
- 1993-06-11 FI FI932697A patent/FI106124B/fi active
- 1993-06-11 HU HU9301717A patent/HU213832B/hu not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4880940A (en) * | 1985-09-24 | 1989-11-14 | Lonza Ltd. | 4-alkoxy-3-pyrrolin-2-on-1-yl acetic acid alkyl esters |
US5144047A (en) * | 1989-07-20 | 1992-09-01 | Lonza Ltd. | Process for the production of tetronic acid alkyl esters |
Also Published As
Publication number | Publication date |
---|---|
ES2119835T3 (es) | 1998-10-16 |
FI932697A (fi) | 1993-12-12 |
IL105938A0 (en) | 1993-10-20 |
CA2092347A1 (en) | 1993-12-12 |
JP3166017B2 (ja) | 2001-05-14 |
PL173073B1 (pl) | 1998-01-30 |
AU666729B2 (en) | 1996-02-22 |
CZ282943B6 (cs) | 1997-11-12 |
KR940000451A (ko) | 1994-01-03 |
EP0573999B1 (de) | 1998-08-26 |
CZ112993A3 (en) | 1994-01-19 |
DK0573999T3 (da) | 1998-10-26 |
PL299256A1 (en) | 1993-12-13 |
FI932697A0 (fi) | 1993-06-11 |
CN1083482A (zh) | 1994-03-09 |
EP0573999A1 (de) | 1993-12-15 |
US5310947A (en) | 1994-05-10 |
HU9301717D0 (en) | 1993-09-28 |
HUT64530A (en) | 1994-01-28 |
JPH0656813A (ja) | 1994-03-01 |
FI106124B (fi) | 2000-11-30 |
AU3999493A (en) | 1993-12-16 |
SK59893A3 (en) | 1994-02-02 |
HU213832B (en) | 1997-10-28 |
SK280170B6 (sk) | 1999-09-10 |
DE59308915D1 (de) | 1998-10-01 |
ATE170181T1 (de) | 1998-09-15 |
IL105938A (en) | 1997-04-15 |
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