Compounds of Formula 9 where the A group has 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 {TAIL ~ lithium} diisopropylamide 
Compounds of Formula 9 where the A group has 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 { TAIL ~ lithium } diisopropylamide
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