Under what reaction conditions could you perform a crossed claisen reaction with an ester component that has only one alpha hydrogen

Basically, A condensation reaction occurs when two molecules join to form a larger molecule and release a smaller molecule(s) in the process. The smaller molecule lost in the reaction is often water, but it can also be methanol, hydrogen chloride, acetic acid or several other molecules.As a result  esters can contain α hydrogens they can undergo a condensation reaction similar to the aldol reaction called a Claisen Condensation

Explanation:

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.

the awnser is group 12