The mixture is stirred for from {HEAD ~ 6 to 24 hours} at {TAIL ~ room temperature} to complete the reaction 
at
The mixture is stirred for from { HEAD ~ 6 to 24 hours } at { TAIL ~ room temperature } to complete the reaction
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH