The golden rule is a good guide to academic ethics (treat others as you would wish to be treated if you were in their place). If you were the editor or reviewers at the first journal, how would you feel about your time (spent on a voluntary basis) being wasted?
Commented Jun 15, 2017 at 18:49 You don't. That's outrageous behavior. Commented Jun 15, 2017 at 20:07The reputation you get by publishing in a higher impact factor journal will probably not compensate for the negative reputation this move might bring.
Commented Jun 15, 2017 at 20:21You should only withdraw a paper if you have a good reason (e.g. you found a serious error). This is not a good reason.
Commented Jun 16, 2017 at 0:45I really don’t see why this question is getting so many downvotes. Yes, the thing its asking about is considered highly unethical — so that’s the answer to the question. But it’s not unreasonable for an inexperienced academic to be unaware of that: consider that similar things in other areas (e.g. “Can I withdraw my job application if I get an offer for a better job?”) are not considered unethical at all.
Commented Jun 17, 2017 at 10:26Technical aspects of withdrawal: Technically, you should be able to withdraw your manuscript from a journal any time prior to acceptance. This would usually be done either by using some kind of button in the submission management system, or by contacting the journal (e.g., editor, action editor, etc.).
Ethics and norms of withdrawal: However, there are reasons for withdrawing a manuscript that are appropriate and those that are inappropriate. After you submit your manuscript, the journal, the editors, and reviewers may begin expending effort and resources in processing your manuscript. It is considered poor form to waste their time, by withdrawing the manuscript for no good reason.
The appropriate time to consider impact factor is before you submit your manuscript to a journal. This is information that is available prior to submission. Thus, I think most academics would consider withdrawing a manuscript from a journal after submission based on impact factor to be very poor form.
In contrast, some acceptable reasons for withdrawing a manuscript during the peer-review process include the following:
Probably, if it is extremely early in the submission process, it would be more reasonable. E.g., you realise a few hours or perhaps a day after submission that you made a mistake.