Why do u need sync rectification? I mean if you shoot for best efficiency, then classical boost is not that good, since you have losses on the input bridge. And in order to mitigate those, there are bridgeless topologies such as totem-pole, dual boost etc, which are often made synchronous. This is probably why classical boost with SR is a rare beast. The drive for such SR FET is also not trivial to design since the it has to be floating and in order to achieve best efficiency dv/dt is very high.
On the flip side, I've built a 3kW PFC unit that is single phase, CCM and the heating is not that bad. IIRC the efficiency was above 96...97%.