Triphenylphosphine → HCID 178527237, compound

Participants

Reaction Conditions

Reaction Steps

N-{1-[Bis(4-chlorophenyl)methyl]azetidin-3-yl}-N-quinol-6-ylmethylsulfonamide may be prepared by carrying out the procedure in the following manner: 0.70 g of 1-[bis(4-chlorophenyl)methyl]azetidin-3-ol and 0.597 g of triphenylphosphine are added, under argon, to a solution of 0.50 g of N-(quinol-5-yl)methylsulfonamide in 70 cm3 of anhydrous tetrahydrofuran and then 0.40 cm3 of diethyl azodicarboxylate and 0.45 g of 1,2-bis(diphenylphosphine)ethane are poured in. After stirring for 20 hours at 20° C., the reaction mixture is concentrated to dryness under reduced pressure (2.7 kPa). The residue is taken up in 70 cm3 of ethyl acetate, the resulting solution is washed with 30 cm3 of brine, dried over magnesium sulfate, filtered and then concentrated to dryness at 50° C. under reduced pressure (2.7 kPa). The violet oil obtained is purified by chromatography on a silica gel column (particle size 0.063-0.200 mm, height 35 cm, diameter 3.9 cm), eluting under an argon pressure of 0.5 bar with a mixture of cyclohexane and ethyl acetate (40/60 then 30/70 and 20/80 by volume) and collecting 50-cm3 fractions. Fractions 6 to 12 are combined and concentrated to dryness under reduced pressure (2.7 kPa). The residue is taken up in 15 cm3 of methanol, the resulting white suspension is filtered, the solid drained and then dried at 50° C. under reduced pressure (2.7 kPa). 0.35 g of N-{1-[bis(4-chlorophenyl)methyl]azetidin-3-yl}-N-quinol-5-ylmethylsulfonamide is obtained in the form of a white solid [1H NMR spectrum (300 MHz, CDCl3, δ in ppm): 2.60 (t, J=7 Hz: 1H); 2.84 (t, J=7 Hz: 1H); 2.99 (s: 3H); 3.36 (split t, J=7 and 2.5 Hz: 1H); 3.56 (split t, J=7 and 2.5 Hz: 1H); 4.01 (s: 1H); 4.85 (mt: 1H); from 7.10 to 7.25 (mt: 8H); 7.40 (dd, J=7.5 and 1 Hz: 1H); 7.54 (dd, J=8.5 and 4 Hz: 1H); 7.74 (dd, J=8 and 7.5 Hz: 1H); 8.20 (broad d, J=8 Hz: 1H); 8.54 (broad d, J=9 Hz: 1H); 8.99 (dd, J=4 and 1.5 Hz: 1H)].

Provenance & Evidence