The rate of {TAIL ~ nucleophilic displacement} is substantially zero prior to {HEAD ~ reduction} of the RIND compound 
The rate of { TAIL ~ nucleophilic displacement } is substantially zero prior to { HEAD ~ reduction } of the RIND compound
OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH