تفاعل #216832

معادلة التفاعل

chlorosulfonyl isocyanate

3-(p-chlorophenyl)-1-methyl-[(trifluoromethyl)sulfonyl]pyrrole

chlorosulfonyl isocyanate

dimethylformamide

→

title product

3-Chloro-3-(p-chlorophenyl)-1-methyl-4[(trifluoromethyl)sulfonyl]pyrrole

المذيبات

water

dimethoxyethane

ظروف التفاعل

المعالجة

1. 1
   workup.STIRRINGstirred for 24 hours
2. 2
   workup.STIRRINGstirred for one hour
3. 3
   استخلاصextracted with ether
4. 4
   غسيلThe combined organic extracts are washed with water
5. 5
   أخرىdried
6. 6
   تركيزconcentrated in vacuo
7. 7
   أخرىto obtain a semi-solid

الإجراء التجريبي

A solution of 3-(p-chlorophenyl)-1-methyl-[(trifluoromethyl)sulfonyl]pyrrole (0.5 g, 0.0015 mol) in dimethoxyethane is treated with chlorosulfonyl isocyanate (0.3 mL, 0.0034 mol), stirred for 24 hours at room temperature, treated with additional chlorosulfonyl isocyanate (0.6 mL, 0.0068 mol), stirred for 24 hours, treated with dimethylformamide (2 mL), stirred for one hour, diluted with water and extracted with ether. The combined organic extracts are washed with water, dried and concentrated in vacuo to obtain a semi-solid. Flash chromatography of the semi-solid using silica gel and a 1:4 ethyl acetate/hexanes solution gives the title product as a white solid (0.2 g, mp 117°-119° C.) which is identified by 1HNMR and 13CNMR spectral analyses.

المصدر