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 {HEAD ~ a view} to maximizing 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 { HEAD ~ a view } to maximizing 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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL