The order of addition of {TAIL ~ the components} of this process is not critical to the preparation of {HEAD ~ the azetidinone product} 
The order of addition of { TAIL ~ the components } of this process is not critical to the preparation of { HEAD ~ the azetidinone product }
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD