dict_1 = {1:2, 2:(3,4), 3:5}
dict_2 = {1:3, 2:4, 3:5, 4:2, 5:1}

dict_r = {}
for key1, value1 in dict_1.items():
    dict_r[dict_2[key1]] = dict_2[value1]
print(dict_r)