The solvent is removed in vacuo and the residue taken up in {HEAD ~ an alcoholic solvent}, such as, for example, ethanol, containing quinoline and Lindlar catalyst and stirred at about room temperature until {TAIL ~ hydrogen uptake} ceases 
The solvent is removed in vacuo and the residue taken up in { HEAD ~ an alcoholic solvent } , such as , for example , ethanol , containing quinoline and Lindlar catalyst and stirred at about room temperature until { TAIL ~ hydrogen uptake } ceases
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH