Nitrogen → HCID 59484963, compound

Participants

Reaction Steps

197 mg of 3-cyanophenylpyridazinone (1.00 mmol) is suspended in a mixture of 5 ml of abs. THF and 1 ml of abs. DMF in an N2-flushed apparatus with CaCl2 protection, 301 mg of 1-{3-[5-(3-dimethylaminopropoxy)pyrimidin-2-yl]phenyl}ethanol (1.00 mmol) and 500 mg of polymer-bound triphenylphosphine (1.5 mmol) are added, the mixture is stirred at RT for 30 min, 345 mg of di-tert-butyl azodicarboxylate (1.5 mmol) are subsequently added with ice/H2O cooling and stirring, and the mixture is stirred at RT for a further 2 h. For work-up, the reaction mixture is diluted with 10 ml of methanol, and the polymer is removed by filtration. The residue is washed with dichloromethane, and the combined filtrate is evaporated to dryness in a rotary evaporator and purified by chromatography (silica gel: DCM+0-30% of MeOHF), giving “A298”, m.p. 105-7° C.

Provenance & Evidence