Diisopropylethylamine → trans-3-{[5-(4-Methoxyphenyl)-6-phenylfuro[2,3-d]pyrimidin-4-yl]amino}cyclohexanol

Participants

Reaction Conditions

Reaction Steps

Initially charge 1.0 g (2.97 mmol) of 4-chloro-5-(4-methoxyphenyl)-6-phenylfuro[2,3-d]pyrimidine and 513 mg (approx. 4.5 mmol) of (+/−)-cis/trans-3-aminocyclohexanol (approx. 3:1 cis/trans mixture; prepared according to J. Chem: Soc. Perkin Trans. I, 1994, 537) in 2.7 ml of DMF. After adding 1.03 ml (5.94 mmol) of DIEA, heat the mixture to 120° C. for 2 h. After cooling, add to ice-water. Filter off the precipitated solid with suction, wash with water and dry under reduced pressure. Purify the crude product by chromatography on silica gel (eluent: cyclohexane/ethyl acetate 2:1→1:2). 1.05 g (85.1% of theory) of the target product are obtained as a cis/trans mixture.

Provenance & Evidence