FIELD: organic chemistry. SUBSTANCE: product: 2-formyl-2,5-dibutylthio-2,3-dihydro-4H-pyran, empirical formula is C14H24O2S2, b. p. is 114 C/1 mm mercury column, refraction coefficient is 1.5160, specific gravity is 1.0686. Reagent 1: butylthioacetic aldehyde. Reagent 2: formaldehyde. Reagent 3: diethylamine hydrochloride. Reaction conditions: molar ratio of reagents 1, 2 and 3 = 1:1:(0.3-0.5), in the medium of ethanol following by washing of reaction mixture with water. Yield of the end product is increased from 60 to 80% as compared with known method. Synthesized compound is used in medicine. EFFECT: increased yield of product.
| Title | Year | Author | Number |
|---|---|---|---|
| 0 |
|
SU297635A1 | |
| 1,2,4-TRIAZOLO{4,3-C]-10,10-DIMETHYL-8,10-DIHYDRO-11H-PYRANO [4′, 3′:4,5] PYRROLO [2,3-D] PYRIMIDINE | 1983 |
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| METHOD FOR PRODUCTION OF ADSORBENT OF SULFUR DIOXIDE | 1992 |
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| LINE FOR IMIDAZOLE SYNTHESIS | 1996 |
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| METHOD OF SYNTHESIS OF 3-ALKOXYCARBONYL-4-HYDROXY-2-METHYL-2H- -1,2-BENZOTHIAZINE-1,1-DIOXIDES | 1993 |
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| METHOD OF SYNTHESIS OF LOWER ALCOHOL VINYL ETHERS | 1986 |
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| 0 |
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| METHOD OF SYNTHESIS OF 2,6-DI-TERT-BUTYL-4-(3-HYDROXYPROPYL)-PHENOL | 1990 |
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| METHOD FOR PRODUCING MIXTURE OF 2-OXO-2,3-DIHYDRO-4,6-BIS-(3ЪDIETHYLAMINOMETHYLENE-4Ъ-OXYPHENYL)-1,3,5-TRIAZINE AND 2,4,6-TRIS-(3Ъ-DIETHYLAMINOMETHYLENE-4Ъ-OXYPHENYL)-1,3,5-TRIAZINE | 0 |
|
SU1313854A1 |
| 4-AMINO-6,6-DIMETHYL-5, 6-DIHYDRO-8H-PYRANO /4′,3′:4,5/ PYROLLO [2,3-D]PYRIMIDINE | 1982 |
|
SU1088331A1 |
