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EXAMPLE 256 4-Methyl-3-[(4-piperidin-1-ylmethyl-phenylamino)-methylene]-1,3-dihydro-indol-2-one. The named compound is prepared by refluxing 0.045 gms E & Z-3-hydroxymethylene-4-methyl-1,3-dihydro-indol-2-one, prepared by substituting 4′-methyl-1,3 dihydro-indol-2-one for 1,3 dihydro-indol-2-one in the reaction of Example 1, with 0.064 gms. 4-piperidin-1-ylmethyl-phenylamine, prepared as in the reaction of Example 251, in tetrahydrofuran (1 mL) overnight. Following cooling to room temperature, solvent evaporation in vacuo, trituration with isopropanol and filtration the reaction yields the named compound as a solid in the amount of 0.0463 gms.
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Reference:
Patent; Andrews, Steven W.; Wurster, Julie A.; Wang, Edward H.; Malone, Thomas; US2003/199478; (2003); A1;,
Indoline – Wikipedia,
Indoline | C8H9N – PubChem