PT82835B - Processo para a preparacao de acido de meldrum (2,2-dimetil-1,3-dioxano-4,6-diona) - Google Patents
Processo para a preparacao de acido de meldrum (2,2-dimetil-1,3-dioxano-4,6-diona)Info
- Publication number
- PT82835B PT82835B PT82835A PT8283586A PT82835B PT 82835 B PT82835 B PT 82835B PT 82835 A PT82835 A PT 82835A PT 8283586 A PT8283586 A PT 8283586A PT 82835 B PT82835 B PT 82835B
- Authority
- PT
- Portugal
- Prior art keywords
- diona
- dioxane
- dimethyl
- preparation
- meldrum acid
- Prior art date
Links
- GXHFUVWIGNLZSC-UHFFFAOYSA-N meldrum's acid Chemical compound CC1(C)OC(=O)CC(=O)O1 GXHFUVWIGNLZSC-UHFFFAOYSA-N 0.000 title abstract 2
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 abstract 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 abstract 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract 2
- 239000003377 acid catalyst Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D319/00—Heterocyclic compounds containing six-membered rings having two oxygen atoms as the only ring hetero atoms
- C07D319/04—1,3-Dioxanes; Hydrogenated 1,3-dioxanes
- C07D319/06—1,3-Dioxanes; Hydrogenated 1,3-dioxanes not condensed with other rings
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Steroid Compounds (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Heterocyclic Compounds That Contain Two Or More Ring Oxygen Atoms (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Static Random-Access Memory (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/749,145 US4613671A (en) | 1985-06-26 | 1985-06-26 | Process for the preparation of Meldrum's acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| PT82835A PT82835A (en) | 1986-07-01 |
| PT82835B true PT82835B (pt) | 1988-12-15 |
Family
ID=25012458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PT82835A PT82835B (pt) | 1985-06-26 | 1986-06-24 | Processo para a preparacao de acido de meldrum (2,2-dimetil-1,3-dioxano-4,6-diona) |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US4613671A (pt) |
| EP (1) | EP0206673B1 (pt) |
| JP (1) | JPS624282A (pt) |
| AT (1) | ATE46694T1 (pt) |
| CA (1) | CA1255319A (pt) |
| DE (1) | DE3665863D1 (pt) |
| DK (1) | DK303686A (pt) |
| ES (1) | ES8707517A1 (pt) |
| FI (1) | FI862719A7 (pt) |
| GR (1) | GR861621B (pt) |
| HU (1) | HUT45981A (pt) |
| IL (1) | IL79065A0 (pt) |
| NO (1) | NO862549L (pt) |
| PT (1) | PT82835B (pt) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5243053A (en) * | 1992-02-26 | 1993-09-07 | Eli Lilly And Company | Methylene meldrum's acid precursors |
| KR20010045418A (ko) * | 1999-11-05 | 2001-06-05 | 박종섭 | 신규한 포토레지스트 단량체, 그의 중합체 및 이를함유하는 포토레지스트 조성물 |
| JP2005343837A (ja) * | 2004-06-04 | 2005-12-15 | Fuji Photo Film Co Ltd | １，３−ジオキソラン−４，６−ジオン化合物の製造方法 |
| WO2013079397A1 (en) * | 2011-11-30 | 2013-06-06 | Solvay Sa | Fluorinated derivatives of meldrum's acid, a method for the preparation of the same, and their use as a solvent additive |
| JP6887367B2 (ja) | 2017-12-08 | 2021-06-16 | マクセルイズミ株式会社 | ロータリー式電気かみそり |
| CN108864035A (zh) * | 2018-06-15 | 2018-11-23 | 浙江巨化技术中心有限公司 | 一种全卤代杂环烷烃的合成方法 |
| CN119039266A (zh) * | 2024-08-23 | 2024-11-29 | 杭州永太生物医药有限公司 | 一种麦氏酸的制备方法 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4065440A (en) * | 1976-08-09 | 1977-12-27 | Standard Oil Company (Indiana) | Malonate ester chain coupling of polyesters |
| US4496368A (en) * | 1983-06-17 | 1985-01-29 | Texaco Inc. | Isopropylidene malonate-N-alkyl alkylenediamine condensation products |
-
1985
- 1985-06-26 US US06/749,145 patent/US4613671A/en not_active Expired - Fee Related
-
1986
- 1986-06-09 IL IL79065A patent/IL79065A0/xx unknown
- 1986-06-09 CA CA000511081A patent/CA1255319A/en not_active Expired
- 1986-06-12 EP EP86304532A patent/EP0206673B1/en not_active Expired
- 1986-06-12 DE DE8686304532T patent/DE3665863D1/de not_active Expired
- 1986-06-12 AT AT86304532T patent/ATE46694T1/de active
- 1986-06-20 GR GR861621A patent/GR861621B/el unknown
- 1986-06-24 PT PT82835A patent/PT82835B/pt not_active IP Right Cessation
- 1986-06-25 NO NO862549A patent/NO862549L/no unknown
- 1986-06-25 HU HU862660A patent/HUT45981A/hu unknown
- 1986-06-25 ES ES556648A patent/ES8707517A1/es not_active Expired
- 1986-06-25 FI FI862719A patent/FI862719A7/fi not_active Application Discontinuation
- 1986-06-26 JP JP61148346A patent/JPS624282A/ja active Pending
- 1986-06-26 DK DK303686A patent/DK303686A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| GR861621B (en) | 1986-10-21 |
| IL79065A0 (en) | 1986-09-30 |
| NO862549L (no) | 1986-12-29 |
| ATE46694T1 (de) | 1989-10-15 |
| DK303686D0 (da) | 1986-06-26 |
| ES8707517A1 (es) | 1987-08-01 |
| PT82835A (en) | 1986-07-01 |
| FI862719A0 (fi) | 1986-06-25 |
| FI862719L (fi) | 1986-12-27 |
| EP0206673B1 (en) | 1989-09-27 |
| FI862719A7 (fi) | 1986-12-27 |
| EP0206673A2 (en) | 1986-12-30 |
| NO862549D0 (no) | 1986-06-25 |
| DE3665863D1 (en) | 1989-11-02 |
| US4613671A (en) | 1986-09-23 |
| ES556648A0 (es) | 1987-08-01 |
| DK303686A (da) | 1986-12-27 |
| JPS624282A (ja) | 1987-01-10 |
| HUT45981A (en) | 1988-09-28 |
| EP0206673A3 (en) | 1987-09-23 |
| CA1255319A (en) | 1989-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM3A | Annulment or lapse |
Free format text: LAPSE DUE TO NON-PAYMENT OF FEES Effective date: 19911106 |