The reaction time required may depend upon various factors including the mole ratio of {TAIL ~ compounds} and and the nature of organic groups R2 and R3 and may generally be in {HEAD ~ the range} of 5 30 minutes 
The reaction time required may depend upon various factors including the mole ratio of { TAIL ~ compounds } and and the nature of organic groups R2 and R3 and may generally be in { HEAD ~ the range } of 5 30 minutes
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL 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