DIY History | Transcribe | Scholarship at Iowa | Phenylbromethylbenzenesulfonamid and phenylbromethylamin by Carl Leopold von Ende, 1893 | Phenylbromethylbenzenesulfonamide and Phenylbromethylamin by Carl Leopold von Ende, 1893, Page 17

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Phenylbromethylbenzenesulfonamid and phenylbromethylamin by Carl Leopold von Ende, 1893

Phenylbromethylbenzenesulfonamide and Phenylbromethylamin by Carl Leopold von Ende, 1893, Page 17

[page]16.[/page]
evaporating and crystallizing out.
     The diphenylsulfone ([subscript]6[/subscript]H[subscript]5[/subscript])[subscript]2[/subscript]SO[subscript]2[/subscript] recrystallized from alcohol has a melting point of 125 degrees.

     [underlined]Benzenesulfochlorid[/underlined] C[subscript]6[/subscript]H[subscript]5[/subscript] * SO[subscript]2[/subscript] * Cl

     First dry in a nickel dish, thoroughly and carefully, over an argand-burner, the sodiumbenzene-sulfonate. Then transfer to a flask with long tube condenser and gradually add the calculated amount of PCl[subscript]5[/subscript], with constant shaking and careful heating over an argand. Continue heating until reaction is completed, distill off POCl[subscript]3[/subscript] formed and allow the mass to thoroughly cool. Then add cracked ice and a little water and shake well until all is dissolved that will dissolve, (the temperature must be kept down so as to prevent any of the benzenesulfochlorid from changing back to the sodium salt) add enough dry benzene to dissolve out all the benzenesulfochlorid and separate

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[page]16.[/page] evaporating and crystallizing out. The diphenylsulfone ([subscript]6[/subscript]H[subscript]5[/subscript])[subscript]2[/subscript]SO[subscript]2[/subscript] recrystallized from alcohol has a melting point of 125 degrees. [underlined]Benzenesulfochlorid[/underlined] C[subscript]6[/subscript]H[subscript]5[/subscript] * SO[subscript]2[/subscript] * Cl First dry in a nickel dish, thoroughly and carefully, over an argand-burner, the sodiumbenzene-sulfonate. Then transfer to a flask with long tube condenser and gradually add the calculated amount of PCl[subscript]5[/subscript], with constant shaking and careful heating over an argand. Continue heating until reaction is completed, distill off POCl[subscript]3[/subscript] formed and allow the mass to thoroughly cool. Then add cracked ice and a little water and shake well until all is dissolved that will dissolve, (the temperature must be kept down so as to prevent any of the benzenesulfochlorid from changing back to the sodium salt) add enough dry benzene to dissolve out all the benzenesulfochlorid and separate