BG48457A3 - Method for preparing of esters of 2, 6- bis- fluormethyl- dihydropyridine- 3, 5- dicarbonic acid - Google Patents
Method for preparing of esters of 2, 6- bis- fluormethyl- dihydropyridine- 3, 5- dicarbonic acidInfo
- Publication number
- BG48457A3 BG48457A3 BG076367A BG7636784A BG48457A3 BG 48457 A3 BG48457 A3 BG 48457A3 BG 076367 A BG076367 A BG 076367A BG 7636784 A BG7636784 A BG 7636784A BG 48457 A3 BG48457 A3 BG 48457A3
- Authority
- BG
- Bulgaria
- Prior art keywords
- esters
- image
- dihydropyridine
- preparing
- alkyl
- Prior art date
Links
- 150000002148 esters Chemical class 0.000 title abstract 3
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 abstract 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 abstract 2
- -1 acetoxymethyl Chemical group 0.000 abstract 2
- 125000001028 difluoromethyl group Chemical group [H]C(F)(F)* 0.000 abstract 2
- 125000006273 (C1-C3) alkyl group Chemical group 0.000 abstract 1
- 125000006527 (C1-C5) alkyl group Chemical group 0.000 abstract 1
- PIINXYKJQGMIOZ-UHFFFAOYSA-N 1,2-dipyridin-2-ylethane-1,2-dione Chemical compound C=1C=CC=NC=1C(=O)C(=O)C1=CC=CC=N1 PIINXYKJQGMIOZ-UHFFFAOYSA-N 0.000 abstract 1
- YNGDWRXWKFWCJY-UHFFFAOYSA-N 1,4-Dihydropyridine Chemical compound C1C=CNC=C1 YNGDWRXWKFWCJY-UHFFFAOYSA-N 0.000 abstract 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 125000004183 alkoxy alkyl group Chemical group 0.000 abstract 1
- 125000000217 alkyl group Chemical group 0.000 abstract 1
- 125000006350 alkyl thio alkyl group Chemical group 0.000 abstract 1
- 229910021529 ammonia Inorganic materials 0.000 abstract 1
- 239000000908 ammonium hydroxide Substances 0.000 abstract 1
- WURBFLDFSFBTLW-UHFFFAOYSA-N benzil Chemical compound C=1C=CC=CC=1C(=O)C(=O)C1=CC=CC=C1 WURBFLDFSFBTLW-UHFFFAOYSA-N 0.000 abstract 1
- 125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 abstract 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 abstract 1
- 125000004186 cyclopropylmethyl group Chemical group [H]C([H])(*)C1([H])C([H])([H])C1([H])[H] 0.000 abstract 1
- 239000012024 dehydrating agents‎ Substances 0.000 abstract 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 abstract 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 abstract 1
- 125000002541 furyl group Chemical group 0.000 abstract 1
- 239000004009 herbicide Substances 0.000 abstract 1
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 abstract 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 abstract 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 abstract 1
- TUDHHJQPQZFEIH-UHFFFAOYSA-N piperidine-4,4-diol Chemical compound OC1(O)CCNCC1 TUDHHJQPQZFEIH-UHFFFAOYSA-N 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- 125000001544 thienyl group Chemical group 0.000 abstract 1
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
- Hydrogenated Pyridines (AREA)
Abstract
This method is used for preparing esters, which are used in the application of herbicides. The esters have the following general formula:<IMAGE>in which R stands for C1-C5 alkyl, trifluoromethyl, cyclohexyl, cyclopropylmethyl, hydroxymethyl, chloromethyl, acetoxymethyl, C2-C4 alkoxyalkyl, C2-C3 alkylthioalkyl, phenyl, benzil, benziloxymethyl, furyl, thienyl or pyridil; R1 is methyl or ethyl; R2 is trifluormethyl or difluormethyl; R3 is trifluormethyl, difluormethyl or C1-C3 alkyl. They are obtained by reacting a lower alkyl 3-ketoester with the formula<IMAGE>in which R1 and R2 have the values (shown above), with an aldehyde of the following formula:<IMAGE>in which R has the indicated values, followed by adding ammonium hydroxide or gaseous ammonia to the resulting product in the presence of an aprotonic solvent to form dihydroxypiperidine, which is further dehydrated using a dehydrating agent to form dihydropyridine.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US52228183A | 1983-08-11 | 1983-08-11 | |
| US60202284A | 1984-04-24 | 1984-04-24 | |
| BG066569A BG42832A3 (en) | 1983-08-11 | 1984-08-10 | Herbicide means and method for prevention of unwanted growth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG48457A3 true BG48457A3 (en) | 1991-02-15 |
Family
ID=27159911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG076367A BG48457A3 (en) | 1983-08-11 | 1984-08-10 | Method for preparing of esters of 2, 6- bis- fluormethyl- dihydropyridine- 3, 5- dicarbonic acid |
Country Status (1)
| Country | Link |
|---|---|
| BG (1) | BG48457A3 (en) |
-
1984
- 1984-08-10 BG BG076367A patent/BG48457A3/en unknown
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