With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.5096-11-7, name is (S)-1-(3-Pyridyl)ethanol, molecular formula is C7H9NO, molecular weight is 123.15, as common compound, the synthetic route is as follows.Computed Properties of C7H9NO
EXAMPLE 6 (+)-(R)-1-(3-Pyridyl)ethyl 1-adamantanecarboxylate The method followed that described in Example 1, but using (+)-(R)-1-(3-pyridyl)ethanol [87% ee; prepared by asymmetric reduction of 3-acetylpyridine with (+)-B-chlorodiisopinocampheyl borane, J. Chandrasekharan, P. V. Ranachandran and H. C. Brown, J. Org. Chem., 50, 5446-5448 (1985)] (0.62 g, 5.0 mmol) in THF (20 ml), n-butyllithium (2.5 M; 2.0 ml, 5.0 mmol) in hexane, and 1-adamantanecarbonyl chloride (1.09 g, 5.5 mmol) in THF (5 ml). Chromatography, on elution with ether-petrol-triethylamine 100:50:1, gave the title compound (1.16 g, 81%) as an oil. [alpha]D +29.9 (c 2, MeOH), 87% ee. Recrystallisation of the (-)-(1R)-10-camphorsulfonate salt from ethyl acetate, and reliberation of the free-base, afforded the title compound with 98% ee, [alpha]D +33.7 (c 2, MeOH). IR numax 1728 cm-1; 1 H-NMR (CDCl3) delta1.54 (3H, d, J 6.5 Hz, CHCH3), 1.72 and 1.90 (12H, 2s, adamantyl CH2), 2.03 (3H, s, adamantyl CH), 5.88 (1H, q, J 6.5 Hz, CHCH3), 7.30 (1H, m, Py 5-H), 7.65 (1H, m, Py 4-H), 8.56 (1H, m, Py 6-H), 8.63 (1H, m, Py 2-H); MS m/z 285 (M+). Anal. Calcd: C, 75.76; H, 8.12; N, 4.91. Found: C, 75.30; H, 8.18; N, 4.46%.
At the same time, in my other blogs, there are other synthetic methods of this type of compound,5096-11-7, (S)-1-(3-Pyridyl)ethanol, and friends who are interested can also refer to it.
Reference:
Patent; British Technology Group Limited; US5595995; (1997); A;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem