https://www.thedrive.com/the-war-zone/ukraine-situation-report-frankensam-to-speed-delivery-of-air-defenses
The DoD and its allies are cobbling together parts to make new air defense systems for Ukraine, including one using the AIM-9L/M sidewinder.
Very exciting. I wonder if long-range A2A missiles could be used the same way. The Russian equivalent are a huge problem for the Ukrainian air force, since they don't really have a way to respond.
The article does talk about NASAMS, which is exactly what you describe. Its worth noting that a lot of the range is consumed accelerating the missile from stationary, gaining altitude, and flying through dense air. So, their range is much shorter than the same weapon when it is air launched.