and subjecting {TAIL ~ the reaction mixture} to {HEAD ~ conditions} such that compounds according to formula are formed 
and subjecting { TAIL ~ the reaction mixture } to { HEAD ~ conditions } such that compounds according to formula are formed
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH