I'm looking for a machine-readable database describing industrially useful reactions in terms of inputs, outputs, and (possibly) catalyzers etc. for a large portion of, or (much more preferable) the entire organic and inorganic chemistry. A tall order, I know. Non-free, paywalled data references are acceptable, although free datasets are better.
As an example:
1-Aminoanthraquinone -> Alizarin 1-Aminoanthraquinone -> Mitoxantrone
EDIT: There's of course the Wikipedia, yet I cannot currently find out how to use Wikidata to mine the relationships between compounds. Many Wikipedia articles cite Ullmann's and other chemical cyclopaedias but I'm unaware of the latter having been converted into machine-readable form.