Are these relations in BCNF?
A relation is in BCNF if every determinant of the non-trivial dependencies is a superkey.

If G is the key of R2, we know that G → F and G → H. 

Since DE in R1 is a subset of FG in R2, and since G → F, we can easily prove that E → D in R1.

If no other constraint holds on R1, then we can calculate the candidate keys of R1 starting from the two dependencies CD → E and E → D, and see if R1 is in BCNF or not.

Finally note that, if no other constraint is known on R2 a part from the key, it is very easy to decide if it in BCNF or not.