Process for producing cyclic sulfates

专利摘要:
Process for the preparation of cyclic sulphates of general formula (I) by oxidation of a cyclic sulphite of general formula (II) by means of an alkali metal or alkaline-earth metal hypohalite and of a catalytic quantity of a ruthenium derivative (RuO2, RuCl3). In the general formulae (I) and (II), R1, R2, R3, R4, R5 and R6, which are identical or different, denote hydrogen, halogen, alkyl, alkoxy, aryl, aryloxy or alkoxycarbonyl. …<IMAGE>…
公开号:SU1720488A3
申请号:SU894613609
申请日:1989-03-07
公开日:1992-03-15
发明作者:Ле Руа Пьер；Мандард-Казэн Бернадетт
申请人:Рон-Пуленк Санте (Фирма)；
IPC主号:

专利说明:

The invention relates to methods for producing cyclic sulfates of the general formula
R, -t- (CH2) n-C-R4
(ABOUT
where Ri-R4 is the same or different hydrogen, methyl or chloromethyl.
p-Oili 1,
which can be used in various organic synthesis ix, in particular, hydroxyalkylation reactions.
A known method for producing cyclic sulfates of the general formula (I) consists in the oxidation of cyclic sulfites of the general formula
R, R3
-WlcHAi-T-R -00
.0
s- 6
with ruthenium tetroxide, derived from ruthenium oxide (RuOa) and sodium period.
However, ruthenium (IV) oxide and sodium periodate are expensive products.
The purpose of the invention is to increase the efficiency of the process.
This goal is achieved in that according to the method for producing cyclic sulfates of formula (I), the oxidation of cyclic sulfite of formula (II) with sodium hypochlorite is carried out in the presence of a catalytic amount of ruthenium oxide or chloride in water, dichloromethane or methyl acetate at a temperature of 1-5 ° C.
Example 1. In a 250-cm flask, 27 g of ethylene sulfite (0.25 mol), 175 cm3 of dichloromethane, 18 mg of ruthenium (IV) oxide dihydrate (0.106 x 3 mol) were introduced. Mix ohVI
ND
2
CO 00

with
Clarified to 5 ° C, then 125 cm3 of a solution (2 mol / L) of sodium hypochlorite (0.25 mol) are added to it over 40 minutes with vigorous stirring. Stirring is continued for 10 min at 5 ° C. After decantation, the organic phase is stirred with 1 cm of isopropanol for 10 minutes at 10 ° C, then it is washed with 40 cm3 of water at 5 ° C.
After concentration of the organic phase at 30 ° C under reduced pressure (100 mm Hg, 13.3 kPa), 25.4 g of ethylene sulfate (0.205 mol) are obtained in the form of white crystals, m.p. 99 ° C.
The yield is 82%.
PRI mme R 2. The process is carried out as in Example 1, using methyl acetate instead of dichloromethane.
24.3 g of ethylene sulfate are obtained in the form of white crystals, m.p. 99 ° C.
The yield is 78.2%.
Example 3. In a flask with a volume of 250 cm3, 13.5 g of ethylene sulfite (0.125 mol) and 108 cm3 of water were introduced. The mixture is cooled to 5 ° C, then a mixture of 62 cm2 of a solution (2 mol / l) of sodium hypochloride (0.137 mol) and 9 mg of ruthenium oxide (IV) dihydrate (0.053 mol) are added with vigorous stirring over 30 minutes. Continue stirring for 10 minutes at 5 ° C. The precipitate obtained is separated by filtration, then washed with 40 cm3 of water at 5 ° C.
After drying at 20 ° C for 17 h under reduced pressure (10 mm Hg, 1.3 kPa), 10.4 g of ethylene sulfate are taken in the form of white crystals with mp. 99 ° C.
The yield is 67%.
EXAMPLE 4 The process is carried out as in Example 3, using instead of ruthenium oxide (JV) dihydrate, 13.1 mg of ruthenium chloride RuCl3 3H20 trihydrate (0.05 x 10 3 mol).
10.6 g of ethylene sulfate are obtained in the form of white crystals with m.p. 99 ° C.
The yield is 68.4%.
Example 5. In a flask with a volume of 1, 250 cm3 of dichloromethane, 50 cm3 of sodium hypochlorite solution (2.18 mol /) and 0.15 g of ruthenium chloride RuCte4 ЗНгО trihydrate (5.7-10 mol) are added with stirring. Cool to 5 ° C, then add 73.2 g of propylene sulfite (0.6 mol) and 300 cm3 of sodium hypochlorite solution (2.18 mol / l) at the same time for 5 minutes at 5 ° C. Stirring is continued for 25 minutes at 5 ° C, then 2 cm of isopropanol is added and stirred for 20 minutes.
After decantation, the aqueous phase is extracted with 2 times 100 cm of dichloromethane. The combined organic phases are washed with 200 cm 3 of water at 5 ° C, then dried over
magnesium sulfate. After filtration and evaporation of the solvent under reduced pressure (20 mm Hg, 2.6 kPa), 72 g of propylene sulfate are obtained in the form
light yellow oil, so Kip. 80 ° C at 1 mm Hg (0.13 kPa).
The yield is 87%. Example 6. In a flask equipped with a stirrer, 9.00 g of 1,2-dimethylethylene sulphite (0.066 mol), 90 cm3 of dichloromethane and 7x10 g of ruthenium oxide RuOa-2H20 (0.041x10 3 mol) are introduced. The mixture is cooled to 5 ° C, then added over 40 minutes with vigorous stirring. 35
5 cm of a solution (2.1 mol / L) of sodium hypochlorite (0.073 mol).
Mixing the biphasic mixture is carried out for 10 minutes at 5 ° C. After decantation, the organic phase is mixed with
0 0.5 cm of isopropanol for 10 min at 5 ° C, then washed with 50 cm of ice water. After concentration of the organic phase at 40 ° C under reduced pressure (100 mm Hg, 13.3 kPa), 7.0 g of mas is obtained, the quantitative analysis of which by the IR spectrum shows that it is formed
1,2-dimethylethylene sulfate (80%) and 1,2-dimethylethylene sulfite (20%) in the form of oil.
The yield is 57%.
0 Example. In a flask equipped with a stirrer, 8.00 g of 2,2-dimethyl propylene sulfite (0.053 mol), 40 cm3 of water and 9.3 mg of ruthenium oxide of Ru02 2H20 dihydrate are introduced. Cool the mixture to 5 ° C, then add to
5 for 60 minutes 24 cm3 of a solution (2.2 mol / l) of sodium hypochlorite. Stirring is carried out for 1 h 30 min at 5 ° C. The resulting precipitate is separated by filtration, then washed with ice water.
0 After drying at 20 ° C for 12 hours under reduced pressure (10 mm Hg, 1.33 kPa), 5.3 g of 2,2-dimethyl propylene sulfate are withdrawn with a mp. 77 ° C.
The yield is 60%.
5Calculated,%: C 36.15; H 6.02; O 38.53;
S 19 30.
Found,%: C 35.76; H 6.32; 0.38.66; S 19.05.
Example In a flask with a capacity of 250 cm
0, 4.96 g of chlorite-1-methylethylene sulfite (0.003 mol) and 25 cm3 of water are introduced. After cooling to 0 ° C, 22.5 cm of an aqueous solution (2 mol / l) of sodium hypochlorite (0.045 mol) containing 4.5 mg of ruthenium oxide (IV) dihydrate (0.027x10 3 mol) are added with stirring. Stirring is continued for 5 min at 2 ° C. Extract the reaction mixture with 2 times 20 cm3 of dichloromethane. The organic phase is treated with 0.5 cm3 of isopropanol, then washed

15 cm of water. After drying the organic phase and concentrating under reduced pressure (2 mm Hg, 0.27 kPa), 3.95 g of 1-chloromethylethylene sulfate are obtained as a colorless liquid.
The yield is 76.4%.

权利要求:
Claims (1)
[1]
Thus, the proposed method is more economical than the known one, since it allows the use of much smaller amounts of catalyst. Invention Formula
The method of obtaining cyclic sulfates of the general formula
RrC- (CH2) B-C-R,
. .--
0
five
where Ri-Ra is the same or different hydrogen, methyl or chloromethyl.
n 0 or 1,
oxidation of cyclic sulfite of the general formula}
Rj-C-KHzV-C-R.,
f
where RI Id and p have the indicated values, in the case of the deposition of ruthenium derivative in a solvent, characterized in that, in order to increase the efficiency of the process, the oxidation is carried out with sodium hypochlorite in the presence of a catalytic amount of ruthenium oxide or chloride in a medium of water, dichloromethane or methyl acetate at 2-5 ° C.

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引用文献:

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FR2647449B1|1989-05-23|1994-03-25|Rhone Poulenc Sante|PROCESS FOR THE PREPARATION OF AROMATIC ETHERS|FR2631340B1|1988-05-16|1990-07-27|Rhone Poulenc Sante|PROCESS FOR THE PREPARATION OF CYCLIC SULFATES|

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FR2676736B1|1991-05-23|1993-08-06|Rhone Poulenc Rorer Sa|NOVEL CHIRAL SULPHATES, THEIR PREPARATION AND THEIR USE IN THE SYNTHESIS OF PHARMACEUTICAL PRODUCTS.|

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CN101456857B|2007-12-11|2014-03-05|中国科学院福建物质结构研究所|Method for preparing high-purity annular sulfuric acid ester|

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CN101870688A|2009-04-24|2010-10-27|中国科学院福建物质结构研究所|Synthesis method of 4-methyl ethyl sulfate|

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法律状态:

优先权:

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申请号 | 申请日 | 专利标题

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FR8802917A|FR2628423B1|1988-03-08|1988-03-08|PROCESS FOR THE PREPARATION OF CYCLIC SULFATES|

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