Christian Dumontet tried to fast-track control of a multimillion-dollar L.A. property in his divorce from "Selling Sunset" star Christine Quinn ... telling the judge it's his property, he's been spending a bunch of money on it while it remains empty -- and he's looking to sell it as soon as possible. Christian filed an emergency request -- according to court records obtained by TMZ -- asking for exclusive control of the couple’s Queens Court property so he could sell it quickly … but the court