This is the first time I've heard of using a personal retirement account to pay business expenses without tax penalties, and I'm not finding any relevant hits on Google.
Kind of a pain in the butt, and not many accountants know of it. There's a lot of fairly strict rules. You can't paint outside the lines.
There's a company that specializes in this kind of thing. I don't really want to go into detail, here, but feel free to get in touch (my HN ID has contact info).
For those following along at home, the accounting term seems to be [[ Rollovers as Business Startups (ROBS) ]]. The IRS website has some unusually direct guidance[1][2] on tax compliance risks associated with ROBS.
[1] https://www.irs.gov/retirement-plans/rollovers-as-business-s...
More info: https://en.wikipedia.org/wiki/Real_estate_investment_trust#U...
[0] https://riftvalleysoftware.com