{TAIL ~ A borohydride}, as e.g. an alkaline earth metal or preferably an alkaline metal borohydride, such as potassium or sodium {HEAD ~ borohydride}, is the least preferred reducing agent 
{ TAIL ~ A borohydride } , as e.g. an alkaline earth metal or preferably an alkaline metal borohydride , such as potassium or sodium { HEAD ~ borohydride } , is the least preferred reducing agent
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 HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH