تفاعل #1702056

معادلة التفاعل

4-[(1R,3S)-3-[[(1R)-1-(4-fluoro-3-methoxy-phenyl)ethyl]amino]cyclopentyl]benzonitrile

trimethylsilylazide

→

title compound

(1S,3R)—N-[(1R)-1-(4-fluoro-3-methoxy-phenyl)ethyl]-3-[4-(1H-tetrazol-5-yl)phenyl]cyclopentanamine

المذيبات

toluene

ظروف التفاعل

المعالجة

1. 1
   workup.ADDITION9.5 ml, 72 mmol, dropwise addition)
2. 2
   ترشيحThe precipitate was filtered off
3. 3
   أخرىthe filtrate was evaporated
4. 4
   أخرىpurified by flash chromatography (gradient of 0-10%, MeOH in DCM containing 2% NEt3)
5. 5
   أخرىThe product thus obtained
6. 6
   أخرىwas precipitated from EtOH
7. 7
   workup.DISSOLUTIONredissolved in DCM
8. 8
   استخلاصextracted with aqueous HCl (pH 1)
9. 9
   ترشيحthe resulting precipitate was filtered off
10. 10
    أخرىdried

الإجراء التجريبي

4-[(1R,3S)-3-[[(1R)-1-(4-fluoro-3-methoxy-phenyl)ethyl]amino]cyclopentyl]benzonitrile (5.1 g, 14.4 mmol) in toluene (160 ml) was treated with trimethylsilylazide (9.5 ml, 72 mmol, dropwise addition) followed by SnBu2O (717 mg, 2.88 mmol). The reaction mixture was stirred at 118° C. overnight. The precipitate was filtered off, and the filtrate was evaporated and purified by flash chromatography (gradient of 0-10%, MeOH in DCM containing 2% NEt3). The product thus obtained was precipitated from EtOH, redissolved in DCM and extracted with aqueous HCl (pH 1). The aqueous phase was neutralized to pH 5-6 with NaOH aq. (1M), and the resulting precipitate was filtered off and dried to afford the title compound. 1H NMR (300 MHz, DMSO) δ 7.89 (d, J=8.2 Hz, 2H), 7.39 (dd, J=8.3, 1.8 Hz, 1H), 7.33-7.23 (m, 3H), 7.14-7.03 (m, 1H), 4.38 (q, J=6.5 Hz, 1H), 3.86 (s, 3H), 3.45-3.32 (m, 1H), 3.09-2.95 (m, 1H), 2.38-2.25 (m, 1H), 2.10-1.64 (m, 5H), 1.56 (d, J=6.7 Hz, 3H).

المصدر