Sample data is as follows:

data = structure(list(Date = c("2011-12-01", "2011-12-01", "2011-12-02", 
"2011-12-02", "2011-12-03", "2011-12-03", "2011-12-04", "2011-12-04", 
"2011-12-05", "2011-12-05", "2011-12-06", "2011-12-06", "2011-12-07", 
"2011-12-07", "2011-12-08", "2011-12-08", "2011-12-09", "2011-12-09", 
"2011-12-10", "2011-12-10", "2011-12-11", "2011-12-11", "2011-12-12", 
"2011-12-12", "2011-12-13", "2011-12-13", "2011-12-14", "2011-12-14", 
"2011-12-15", "2011-12-15", "2011-12-16", "2011-12-16", "2011-12-17", 
"2011-12-17", "2011-12-18", "2011-12-18", "2011-12-19", "2011-12-19", 
"2011-12-20", "2011-12-20", "2011-12-21", "2011-12-21", "2011-12-22", 
"2011-12-22", "2011-12-23", "2011-12-23", "2011-12-24", "2011-12-24", 
"2011-12-25", "2011-12-25", "2011-12-26", "2011-12-26", "2011-12-27", 
"2011-12-27", "2011-12-28", "2011-12-28", "2011-12-29", "2011-12-29", 
"2011-12-30", "2011-12-30", "2011-12-31", "2011-12-31"), value = c(21.8, 
14.9, 17.8, 13.4, 19.4, 11.8, 20.2, 14.4, 20.2, 18.1, 21.8, 17.6, 
24.5, 20.4, 22.9, 15.7, 16.3, 13.4, 15.9, 11, 16.3, 9.6, 18.6, 
11.7, 20.7, 14.1, 21.6, 17.7, 22.2, 17.5, 19, 15.1, 17.8, 14.4, 
18.6, 13.6, 19.2, 14, 18.7, 16.7, 22, 17.2, 20.5, 16.1, 17.7, 
12.6, 15.6, 10.6, 15.9, 10.3, 17.9, 13.9, 18, 15.1, 20.6, 15.1, 
20.7, 16.1, 19.6, 16.5, 19.8, 14.8), temp = c("max", "min", "max", 
"min", "max", "min", "max", "min", "max", "min", "max", "min", 
"max", "min", "max", "min", "max", "min", "max", "min", "max", 
"min", "max", "min", "max", "min", "max", "min", "max", "min", 
"max", "min", "max", "min", "max", "min", "max", "min", "max", 
"min", "max", "min", "max", "min", "max", "min", "max", "min", 
"max", "min", "max", "min", "max", "min", "max", "min", "max", 
"min", "max", "min", "max", "min")), row.names = c(NA, -62L), class = c("tbl_df", 
"tbl", "data.frame"))

The code and the result:

library(tidyverse)
> data %>% 
+         rename(., all_of(c(`Date of admission` = 'Date',
+                            `Temperature (deg. C)` = 'value',
+                            `Maximum / minimum` = 'temp')))
Change name of variable NA NA NA to  in data frame . 
# A tibble: 62 × 3
   Date       value temp 
   <chr>      <dbl> <chr>
 1 2011-12-01  21.8 max  
 2 2011-12-01  14.9 min  
 3 2011-12-02  17.8 max  
 4 2011-12-02  13.4 min  
 5 2011-12-03  19.4 max  
 6 2011-12-03  11.8 min  
 7 2011-12-04  20.2 max  
 8 2011-12-04  14.4 min  
 9 2011-12-05  20.2 max  
10 2011-12-05  18.1 min  
# ℹ 52 more rows
# ℹ Use `print(n = ...)` to see more rows

The column names have not been modified. Is it possible to alter the column names that are not valid using the rename function from the dplyr package? I believe the issue might be related to the use of backticks (“). How can we correctly use the rename function with backticks?