When a THF solution of phenyl-2-propanone and bromobutane is treated with 50% aqueous NaOH,poor yields of 3-phenyl-2-heptanone result.However,when a small amount of benzyltriethylammonium chloride is added to the reaction mixture,the yield of 3-phenyl-2-heptanone increases to 90%.Explain these results. 
Definitions:
Broca's Aphasia
A neurological condition characterized by difficulties in speech production and writing, often caused by damage to a specific area of the brain known as Broca's area.
Comprehend
To grasp mentally; understand.
Down Syndrome
A condition caused by an extra chromosome on the 21st pair and characterized by mental deficiency, a broad face, and slanting eyes.
Extra Chromosome
An atypical condition where an individual has more than the usual number of chromosomes, leading to genetic disorders such as Down syndrome.
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