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(3S,4S)—N3-(6-(2,6-dichloro-3,5-dimethoxyphenyl)quinazolin-2-yl)tetrahydro-2H-pyran-3,4-diamine (0.060 g, 0.134 mmol) was taken up in CH2Cl2 (2 ml) and cooled to 0° C., followed by addition of DIEA (0.023 ml, 0.134 mmol) and then acryloyl chloride (0.012 ml, 0.147 mmol) slowly. The reaction was stirred at 0° C. for 30 minutes, then the mixture was loaded directly onto silica and purified by flash chromotography using 0-10% CH2Cl2/MeOH. N-((3S,4S)-3-((6-(2,6-dichloro-3,5-dimethoxyphenyl)quinazolin-2-yl)amino)tetrahydro-2H-pyran-4-yl)acrylamide (0.041 g, 0.081 mmol, 61% yield) was recovered as an off white solid. MS (ES+) C24H24Cl2N4O4 requires: 502, found: 503 [M+H]+.

1. custompurified by flash chromotography