Unless you've been on clonazepam long time, and have had small amount of alcohol with it in the past without issues, maybe. I find alcohol to run my clonazepam experience and would skip my clonazepam the few times I drank while taking it. It has a long half life, so a beer six hours later will still combine in effect, maybe up to or past twelve hours post clonazepam.
If not, no. It's a recipe for disaster. If you insist start with 1-mg clonazepam and half a beer and make sure you actually stop there. Have a second person assess yours motor skills b/c you won't be able to do so accurately, you'll think you're fine when you're a mess, and never, ever drive on this combo, regardless how small an amount.
Never drive on this combo. Can't say that enough. And don't redose or go beyond a beer or two, it's a waste and you'll just forget most of the experience.