Cacher is the code snippet organizer for pro developers

$(document).ready(function(){
  $('.toggle-btn-disabled').on('change',function(){
    if( $(this).is(':checked') ){
      $('[type="submit"]').removeAttr('disabled');
    }else{
      $('[type="submit"]').attr('disabled','disabled');
    }
  });
});

  <label>
                        <input type="checkbox" name="個人情報保護方針" value="同意する" required class="toggle-btn-disabled">
                        個人情報保護方針に同意する
                    </label>
                    
                    
                    <button type="submit" class="center-block container-btn" disabled>
                    <img src="common/img/btn/btn-submit.png" alt="入力内容を確認する" class="img-responsive">
                </button>