Ethanesulfonyl chloride synthesis
- Product Name:Ethanesulfonyl chloride
- CAS Number:594-44-5
- Molecular formula:C2H5ClO2S
- Molecular Weight:128.58
74-84-0
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594-44-5
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Yield:594-44-5 37%
Reaction Conditions:
with sulfur dioxide;chlorine at -10 - 80; for 1 h;Product distribution / selectivity;Sealed reactor;
Steps:
11
Ex 2-11 and Comparative Examples (CEx) A-EReplicate of Ex 1 with changes in catalyst and, for Ex 10 and 11, hydrocarbon as shown in Table 1 below,Table 1The data summarized in Table 1 represent evaluations of a number of materials as potential catalysts for hydrocarbon sulfochlorination. CEx B, C and E show no MSC production under reaction conditions shown in Table 1 with, respectively, chromium (III) chloride (CrCl3), vanadium oxide (V2O3) and copper oxide (CuO). CEx A and CEx D show very little (less than 1 percent) MSC production under reaction conditions shown in Table 1 with, respectively triphenylphosphine ruthenium chloride ((Ph3P)3RuCl2) and ferric oxide (Fe2O3). By way of contrast, chromium (II) chloride (CrCl2) (Ex 5 and 6), chromium oxide (Cr2O3) (Ex 4 and 7), molybdenum oxide (MoO3) (Ex 8) and lanthanum oxide (La2O3) all show MSC yields of approximately 10 percent or more, at least a tenfold increase over CEx A and D. Ex 1 and 2 show how reaction conditions affect MSC yield using (dppe)FeCl2 as catalyst. Ex 3 shows low (1.5 percent) yield with CuCl/2,2'-bpy as catalyst under reaction conditions shown in Table 1. Ex 10 (sulfochlorination of propane) and Ex 11 (sulfochlorination of ethane) show very good RSC yields with Cr2O3 as a catalyst. Although not shown here, control experiments under similar conditions to those shown in Table 1, but with no catalyst, also yield no MSC.
References:
WO2011/14553,2011,A2 Location in patent:Page/Page column 3-4
110-81-6
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594-44-5
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75-08-1
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594-44-5
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625-60-5
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594-44-5
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14128-44-0
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594-44-5
255 suppliers
$21.00/25g