Reaction temperature is usually {HEAD ~ 0°} to {TAIL ~ 100° C.}, preferably 20° to 80° C 
Reaction temperature is usually { HEAD ~ 0 ° } to { TAIL ~ 100 ° C. } , preferably 20 ° to 80 ° C
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH