It can be done, but:
1- enlarging times are long
2- contrast is very difficult to control - either all high contrast with no midtones or all midtones and no extremes.
I have done it in a pinch, but would not suggest it has a regular method. (for example a friend of mine loves B&W so I re-printed his favorite color wedding picture in B&W as a Christmas gift one year - never ever again - and this is my best friend)
There are specialty B&W papers that are for printing color negatives, I have not used them. I belive they have a higher ASA to resolve probelm #1.[/u]