Rhodium-catalyzed asymmetric hydrogenation of indoles

200 mL four-necked round-bottomed flask with a Teflon-coated magnetic stirrer bar and a rabber sepmm 

20 mL pressure-equalizing dropping funnel with a mbber septum Low-temperature thermometer with an adapter Three-way stopcock 

All-glass lure syringes of appropriate volumes with a 15 cm needle Cannula 

Dry ice-acetone bath (or acetone bath cooled with NESLAB CC-10011) 

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