The mole ratio of compound to compound may be in the range of 1:1 1:5, but preferably in the range of 1:1 1:1.5 with a view to maximizing {HEAD ~ the economy} of {TAIL ~ the overall process} 
The mole ratio of compound to compound may be in the range of 1:1 1:5 , but preferably in the range of 1:1 1:1.5 with a view to maximizing { HEAD ~ the economy } of { TAIL ~ the overall process }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL