Erreaktibo organolitikoak sintesi asimetrikoan, aminen ...
Erreaktibo organolitikoak sintesi asimetrikoan, aminen ...
Erreaktibo organolitikoak sintesi asimetrikoan, aminen ...
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5. Kapitulua Atal Esperimentala<br />
CH<br />
3<br />
NH SO CH<br />
2 3<br />
Etekina: %80.<br />
U.p.: 79-81 o C (hexanotan).<br />
es: %0 (Chiralcel OD, hexano/2-propanol %10, 0.7 mL/min, tr (S) = 14.7 min (%49.8);<br />
tr (R) = 17.9 min (%50.2).<br />
1 H-NMR (δ, ppm): 1.40 (d, J = 6.7 Hz, 3H, CHCH3NH), 2.37 (s, 3H, CH3), 4.45 (dc, J<br />
= 7.1, 6.7 Hz, 1H, CHCH3NH), 5.38 (d, J = 7.1 Hz, 1H, NH), 7.08-7.17 (m, 7H, Harom),<br />
7.62 (d, J = 8.3 Hz, 2H, H2, H6).<br />
13 C-NMR (δ, ppm): 21.4 (Carom-CH3), 23.5 (CHCH3), 53.6 (CHNH), 126.1, 127.0,<br />
127.3, 128.4, 129.3 (Carom-H), 137.5 (C1), 142.0 (C1’), 142.9 (C4).<br />
IR (CH2Cl2): 3269 (NH), 2914 (C-H), 1452 (CH3) 1153 (SO2) cm -1 .<br />
E.M. (IE) [m/z (ugaritasun erlatiboa)]: 276 (M +1 , 5), 261 (11), 260 (64), 166 (7), 155<br />
(55), 143 (8), 120 (55), 111 (10), 105 (33), 104 (14), 99 (9), 97 (19), 95 (9) 92 (12), 91<br />
(100), 85 (26), 83 (33), 82 (11), 77 (26), 69 (28), 65 (31), 57 (66), 55 (41).<br />
Analisi elementala: C15H17NO2S<br />
Kalkulatua: %C: 65.43 %H: 6.22 %N: 5.08.<br />
Lortutakoa: %C: 65.53 %H: 6.39 %N: 5.00.<br />
5.2.2.9. 3d N-[(1-butil)-bentzil]-p-toluensulfonamidaren <strong>sintesi</strong>a.<br />
n-BuLi-a (1.4 M-ko disoluzio baten 0.4 mL, 0.58 mmol), dietil eter lehorretan (5<br />
mL) dagoen (−)-esparteinaren (0.14 mL, 0.58 mmol) disoluzioari gehitu zitzaion –78<br />
o C-tan, irabiaketa 20 minutuz mantendu zelarik. Jarraian dietil eter lehorretan (5 mL)<br />
disolbaturiko N-bentziliden-p-toluensulfonamida (69 mg, 0.27 mmol) kanulaz gehitu<br />
zen –78 o C-tan. Erreakzio-nahastea –42 o C-tan ordubetez irabiatu ondoren, ura gehitu<br />
zen eta fase organikoa NaCl-ko disoluzio aseaz (3 × 10 mL) garbitu zen. Disoluzio<br />
171