If you put the following in .emacs then C-f5 will run save the file
and run LaTeX.
(defun rl-save-and-LaTeX ()
"Save and LaTeX `TeX-master-file' (without querying the user).
Any files \\input by `TeX-master-file' are also saved without prompting."
(interactive)
(let (TeX-save-query)
;the following will save without prompting
(TeX-save-document (TeX-master-file))) ;save master document
and its files
(TeX-command "LaTeX" 'TeX-master-file)) ;LaTeX master doument
(add-hook 'LaTeX-mode-hook (lambda ()
(define-key