{HEAD ~ A process} for preparing {TAIL ~ an azetidinone} represented by the formula ##STR16## wherein Q is hydrogen, lower alkyl, phenyl 0 3 or phenyl 0 3  
for preparing
{ HEAD ~ A process } for preparing { TAIL ~ an azetidinone } represented by the formula # # STR16 # # wherein Q is hydrogen , lower alkyl , phenyl 0 3 or phenyl 0 3
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL 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