A second-half scoring spree allowed Derry to book a semi-final berth at Celtic Park yesterday.
The accuracy of Paul Finlay kept the Farney men in touch, but with Conleth Gilligan looking sharp and Brian McCallion raiding for two points, the Oak Leafers went score-crazy in the second half.
Gilligan and Paddy Bradley pointed twice each and James Conway scored from range to stretch the lead to six points.
Gilligan volleyed home a goal on 50 minutes to make it 1-16 to 0-10. Owen Duffy's goal gave Monaghan a lifeline. However, a late Finlay penalty was saved by Danny Devlin.
Scorers -- Derry: C Gilligan 1-6 (0-2f), P Bradley
0-7 (0-3f), B McCallion 0-2, N McNicholl, M Lynch, S L McGoldrick, M Drumm, J Conway, B McGoldrick 0-1 each. Monaghan: P Finlay 0-8 (0-5f), O Duffy 1-1, J Turley, P Kiernan, M Downey 0-1 each.
Derry -- D Devlin; B McCallion, G O'Kane, D McBride; M Drumm, B McGoldrick, A McAlynn; PJ McCloskey, J Conway; D Mullan, SL McGoldrick, M Lynch; N McNicholl, P Bradley, C Gilligan. Subs: N Holly for Conway (60), B McGuigan for B McGoldrick (66), M Donaghy for M Lynch (67), C McGoldrick for Gilligan (68), D Mulholland for Bradley (69).
Monaghan -- P McBennett; D Wylie, S Driver, K Duffy; P Kiernan, J O'Hara, S Smyth; D Clerkin, F Caulfield; G Doogan, M Downey, J Turley; K Hill, P Finlay, T Duffy. Subs: D Connolly for Driver (28), O Duffy for Smyth (h-t), M McElroy for T Duffy (53), B McKenna for (60).
Ref --J White (Donegal).