Реакция #49577

Уравнение реакции

4-(2-cyanobenzenesulfonyloxy)-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-formylindol-2-yl]isoindolinone

pyrrolidine

acetic acid

sodium triacetoxyborohydride

→

4-(2-cyanobenzenesulfonyloxy)-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-(pyrrolidin-1-ylmethyl)indol-2-yl]isoindolinone

Растворители

acetonitrile

Условия реакции

Обработка

1. 1
   Другоеfollowed by purification of the residue by flash column chromatography (chloroform/methanol=85/15, 80/20)

Методика

In a similar manner to Step 2 of Example 6, 4-(2-cyanobenzenesulfonyloxy)-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-formylindol-2-yl]isoindolinone (0.140 g, 0.238 mmol) was dissolved in acetonitrile (6.0 mL), and the solution was treated with pyrrolidine (0.398 mL, 4.77 mmol), acetic acid (0.273 mL, 4.77 mmol) and sodium triacetoxyborohydride (0.151 g, 0.715 mmol), followed by purification of the residue by flash column chromatography (chloroform/methanol=85/15, 80/20) to obtain 4-(2-cyanobenzenesulfonyloxy)-5-methoxy-7-[1-(tert-butoxycarbonyl)-5-(pyrrolidin-1-ylmethyl)indol-2-yl]isoindolinone (0.0773 g, ESI-MS m/z: 643 [M+H]+; 1H-NMR (CD3OD)8(ppm): 1.18 (s, 9H), 1.83-1.92 (m, 4H), 2.88-2.96 (m, 4H), 3.25 (s, 3H), 4.04 (s, 2H), 4.49 (s, 2H), 6.55 (s, 1H), 7.00 (s, 1H), 7.28 (dd, J=1.6, 8.7 Hz, 1H), 7.52 (d, J=1.6 Hz, 1H), 7.77-7.93 (m, 3H), 8.08 (dd, J=1.6, 7.3 Hz, 1H), 8.17 (d, J=8.7 Hz, 1H).

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