Benzenemethanamine, ar-ethenyl-N,N-dimethyl- → (E)-3-(4-((dimethylamino)methyl)styryl)-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazole-6-carbaldehyde

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The title compound was synthesized according to the method of Example A22A, utilizing N,N-dimethyl-1-(4-vinylphenyl)methanamine (42 mg, 0.26 mmol) and 3-iodo-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-indazole-6-carbaldehyde (70 mg, 0.17 mmol) with heating in a sealed tube at 90° C. overnight instead of with microwave irradiation. Purified by prepTLC (SiO2 10% MeOH/DCM) to provide the title compound to as a pale orange gum (33.4 mg, 44%). 1H NMR (400 MHz, CD3OD) 8 ppm 10.13 (s, 1H), 8.27 (m, 2H), 7.81 (d, J=9.29 Hz, 1H), 7.69 (d, J=8.28 Hz, 2H), 7.61 (d, J=16.6 Hz, 1H), 7.50 (d, J=16.6 Hz, 1H), 7.43 (d, J=8.28 Hz, 2H), 5.86 (s, 2H), 3.82 (s, 2H), 3.62 (t, J=8.03 Hz, 1H), 2.50 (s, 6H), 0.87 (t, J=8.03 Hz, 2H), −0.09 (s, 9H); MS ESI 436.3 [M+H]+, calcd for [C25H33N3O2Si+H]+ 436.6.

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