Deducting passive real estate losses from "passive" investment income

Specifically, I sold a rental property at a significant loss (both Tax Basis of sale prices and damage expenses).  There is not nearly enough rental income in the year to deduct all of these losses (below zero deduction) so I'd like to deduct the remaining passive losses from income via an IRA to Roth IRA conversion.  Some will be deducted in same year, but most will carry over and deduct from the conversion small amounts at a time year to year.

EDIT:  401k/IRA conversion/early withdrawal is always considered ordinary income, not passive, so passive losses would not ever be able to b e deducted from this sort of income.