with varying types of compound 7 9 and 11 respectively in the case of compound 9b compound 6 50 mg 0 0434 mmole is first added in a reactor along with compound 9b 21 mg 0 0955 mmole and triethylamine 14 mg 0 0955 mmole next add 2 ml 2 ethoxyethanol as the solvent and put the reaction system in a 120 u00b0 c oil bath for 10 hours slow precipitation of solids will be observed after complete reaction apply direct filtration to the product and wash the obtained solid with methanol finally re crystallize the solid obtained with ethanol to obtain the desired final product 10d which is white solid with a yield of 71 43 mg 1 h nmr cd 2 cl 2 400 mhz u03b4 8 04 d 1h c h u2014 n 7 94 d 1h 7 73 td 1h 7 45 d 1h 7 43 d 1h 7 13 7 11 m 2h 6 96 6 89 m 3h 6 85 d 2h 6 71 6 63 m 2h 6 53 d 1h 6 43 d 1h 3 09 s 3h 2 99 s 3h 2 33 s 3h 1 h nmr cd 2 cl 2 400 mhz u03b4 8 19 d 1h c h u2014 n 7 96 d 1h 7 75 t 1h 7 39 d 2h 7 08 7 02 m 2h 6 91 6 78 m 5h 6 70 6 61 m 2h 6 48 d 1h 6 39 d 1h 3 08 s 3h 2 95 s 3h 1 h nmr cd 2 cl 2.