{HEAD ~ The reaction} of a compound of formula IV with a compound of formula V in accordance with process variant can be carried out in {TAIL ~ a manner} known per se 
{ HEAD ~ The reaction } of a compound of formula IV with a compound of formula V in accordance with process variant can be carried out in { TAIL ~ a manner } known per se
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH