title: Create a dataframe with list elements with dplyr in R
body: <p>This is my dataframe:</p>
  
  <pre><code>    df&lt;-list(structure(list(Col1 = structure(1:6, .Label = c("A", "B", 
  "C", "D", "E", "F"), class = "factor"), Col2 = structure(c(1L, 
  2L, 3L, 2L, 4L, 5L), .Label = c("B", "C", "D", "F", "G"), class = "factor")), class = "data.frame", row.names = c(NA, 
  -6L)), structure(list(Col1 = structure(c(1L, 4L, 5L, 6L, 2L, 
  3L), .Label = c("A", "E", "H", "M", "N", "P"), class = "factor"), 
      Col2 = structure(c(1L, 2L, 3L, 2L, 4L, 5L), .Label = c("B", 
      "C", "D", "F", "G"), class = "factor")), class = "data.frame", row.names = c(NA, 
  -6L)), structure(list(Col1 = structure(c(1L, 4L, 6L, 5L, 2L, 
  3L), .Label = c("A", "W", "H", "M", "T", "U"), class = "factor"), 
      Col2 = structure(c(1L, 2L, 3L, 2L, 4L, 5L), .Label = c("B", 
      "C", "D", "S", "G"), class = "factor")), class = "data.frame", row.names = c(NA, 
  -6L))) 
  </code></pre>
  
  <p>I want to extract col1=<code>df[[1]][1]</code> as a dataframe. Then col1 of the second position of this list I want to merge to the <code>df[[1]][1]</code>, then I will have a dataframe with 2 columns.
  After this I want to merge the column 1 of the third position of the list to the dataframe with two columns, then I will have a dataframe with 3 columns.</p>
  
  <p>In other words my dataframe should have 3 columns, all the first columns of each entry of my list.</p>
  
  <p>The dplyr package can helpme to do this?</p>
  
  <p>Any help?</p>