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Maleic anhydride (II), H2O, NaOH/H2O--->pressued with H2S;
Yield
Reaction Conditions
Operation in experiment
With sodium hydrogensulfide; water
6
[ 4917-76-4 ]
[ 10025-73-7 ]
2Cr(3+)*(OOCCH2CH(COO))2S(4-)*2OH(1-)*2H2O={Cr2(OOCCH2CH(COO))2S(OH)2(H2O)2}[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
With NaOH In ethanol; water NaOH to maintain the pH between 5-6; heating the mixture for 1h at 80 ° C;; concentraiton; the precipitate was cooled, filtered, washed with water ethanol and acetone and dried in vacuo over CaCl2; elem. anal.;;
2Cu(2+)*(OOCCH2CH(COO))2S(4-)*4H2O={Cu2(OOCCH2CH(COO))2S(H2O)4}[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
With NaOH In ethanol; water NaOH to maintain the pH between 5-6; heating the mixture for 0.5h at 80 ° C;; concentraiton; the precipitate was cooled, filtered, washed with water ethanol and acetone and dried in vacuo over CaCl2; elem. anal.;;
2Co(2+)*(OOCCH2CH(COO))2S(4-)*6H2O={Co2(OOCCH2CH(COO))2S(H2O)6}[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
With NaOH In ethanol; water refluxing on a water bath; NaOH to maintain the pH between 5-6; 2h,; concentraiton; the precipitate was cooled, filtered, washed with water ethanol and acetone and dried in vacuo over CaCl2; elem. anal.;;
2Ni(2+)*(OOCCH2CH(COO))2S(4-)*6H2O={Ni2(OOCCH2CH(COO))2S(H2O)6}[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
With NaOH In ethanol; water refluxing on a water bath; NaOH to maintain the pH between 5-6; 2h,; concentraiton; the precipitate was cooled, filtered, washed with water ethanol and acetone and dried in vacuo over CaCl2; elem. anal.;;
4Na(1+)*2OsO2(2+)*(C8H6O8S)(4-)*4OH(1-)*5H2O=Na4[(OsO2)2(C8H6O8S)(OH)4]*5H2O[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
In water addn. of the Os acid to ligand, maintaining pH at 8-10; concn.; refrigeration for 2ds, pptn.; filtration; washing with ethanol, acetoneand ether; drying in vac. over CaCl2; elem. anal.;
2Pt(4+)*4Cl(1-)*(C8H6O8S)(4-)=Pt2(C8H6O8S)Cl4[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
In water addn. of the metal chloride to the acid, maintaining pH at 8-10; concn.; refrigeration for 2ds, pptn.; filtration; washing with ethanol, acetoneand ether; drying in vac. over CaCl2; elem. anal.;
2Pd(2+)*(C8H6O8S)(4-)*H2O=Pd2(C8H6O8S)*H2O[ No CAS ]
Yield
Reaction Conditions
Operation in experiment
In water addn. of the metal chloride to the acid, mixture is heated on steam-bath for 2 h at pH 8-10 and concentrated; cooling, pptn. with excess of acetone, filtered, washed with EtOH, acetone and ether and dried in vacuum over CaCl2, elem. anal.;
With dihydrogen peroxide In ethanol; water at 20℃; for 0.0833333h; Green chemistry;
General procedure for the oxidative coupling of thiols
General procedure: Fe3O4-AMPD-Cu (0.005 g), thiol (1 mmol) and H2O2 (0.4 mL) were charged into a round-bottomed flask containing ethanol (2 mL) and stirred at room temperature for the appropriate time. After completion of reaction, the catalyst was magnetically separated. The residue was extracted with ethyl acetate and the extract was dried over anhydrous Na2SO4 to give the pure disulfide
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