How to make a Correlation One Column to Many Columns and return a list?

i would like to create a correlation function between a column and the others, passing the dataframe with all columns, corelating wiht a specif colum and returning a list of metrics and correlation i`am doing this like this.

correlations = df.corr().unstack().sort_values(ascending=True) 
correlations = pd.DataFrame(correlations).reset_index() 
correlations.columns = ['corr_matrix', 'dfbase', 'correlation'] 
correlations.query("corr_matrix == 'venda por m2' & dfbase != 'venda por m2'") 

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but i would like to know a way to make this with a function.