[NH2:1]C1C=CC=CC=1.[CH3:8][S:9][CH2:10][CH2:11][O:12][C:13]1[CH:19]=[CH:18][CH:17]=[CH:16][C:14]=1[NH2:15].N([O-])=O.[Na+].O.O.Cl[Sn]Cl.[OH-].[Na+]>O.Cl.CCOCC.C(O)(=O)C>[CH3:8][S:9][CH2:10][CH2:11][O:12][C:13]1[CH:19]=[CH:18][CH:17]=[CH:16][C:14]=1[NH:15][NH2:1]
27.4 g of the aniline obtained under (b) are placed into 45 ml of glacial acetic acid and, with ice cooling, a mixture of 37 ml of concentrated HCl and 75 ml of H2O is added. The formed suspension is diazotised at 0°-5° C. with 10.3 g of NaNO2 in 22 ml of water. The diazonium solution is subsequently stirred at 0° C. for 10 minutes, and a solution of 80.7 g of SnCl2.2H2O in 112 ml of concentrated HCl is then quickly added with cooling. After 4 hours, water is added to the reaction mixture, and extraction is repeatedly performed with ether. The aqueous phase is afterwards rendered alkaline with a 10% aqueous sodium hydroxide solution, and extracted three times with ether. After customary further processing of the ether phases, there is obtained the compound of the formula ##STR61## having a melting point of 72.5°-74.5° C.
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