4-IODO-7-[(4-METHYLPHENYL)SULFONYL]-7H-PYRROLO[2,3-D]PYRIMIDINE synthesis

Yield:906092-45-3 88%

Reaction Conditions:

with hydrogen iodide in water at 0 - 20; for 6 h;

Steps:

9

Example 9; 4-Iodo-7-(toluene-4-sulfonyl)-7H-pyrrolo[2,3-d]pyrimidine: [5 g. 16.2 mmol] of 4-Chloro-7-(toluene-4-sulfonyl)-7H-pyrrolo[2,3-d]pyrimidine (as described in Example 1) was added in small portions, to 100 mL of cold stirring 47% stabilized hydriodic acid at 0° C. and stirred for one hour cold; the temperature was then allowed to warm to ambient temperature and stirred an additional 5 hrs. The reaction mixture was diluted with water and the solid was isolated via suction filtration, the solid being washed with additional water. The crude solid was dissolved in dichloromethane and washed with saturated sodium hydrogen carbonate solution twice, brined, dried (Na₂SO₄) and the solvent was removed under reduced pressure and triturated with a 2:1 mixture of hexanes/ MTBE to yield 5.7 g of a white material (88%). ¹H NMR: 500 Mhz in CDCL3 δ8.61(s,1H), 8.06(d,2H J=8.5 Hz), 7.75(d,1H J=4.1 Hz), 7.32(d,2H J=8.5 Hz), 6.45(d,1H J=4.1 Hz), 2.4(s,3H).

References:

US2006/183761,2006,A1 Location in patent:Page/Page column 28