Compounds of Formula 9 where the A group has {TAIL ~ a triple bond} can be made by reaction of a corresponding aromatic methyl ketone with strong base, such as lithium diisopropylamide, reaction with diethyl chlorophosphate and {HEAD ~ subsequent addition} of lithium diisopropylamide 
Compounds of Formula 9 where the A group has { TAIL ~ a triple bond } can be made by reaction of a corresponding aromatic methyl ketone with strong base , such as lithium diisopropylamide , reaction with diethyl chlorophosphate and { HEAD ~ subsequent addition } of lithium diisopropylamide
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL 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 HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH