- They required the information to be sent as soon as possible.
- They required to sent the information as soon as possible.
I think the first one is more acceptable than second one. It seems to me that require needs an object after it. I don't know which verbs are always followed by an object. I also think when passive construction of such kind of verbs is used, a to be is compulsory, i.e to be will follow the object that follows such kind of verbs.