The present invention encompasses compounds of formula(I),wherein the groupsR1toR4,Aandphave the meanings given in the claims and specification, their use as inhibitors of SOS1, pharmaceutical compositions which contain compounds of this kind and their use as medicaments/medical uses, especially as agents for treatment and/or prevention of oncological diseases.本發明涵蓋式(I)化合物,,其中基團R1至R4、A及p具有申請專利範圍及說明書中所給出之含義;其作為SOS1抑制劑之用途;含有此類化合物之醫藥組合物及其作為藥劑/醫學應用之用途、尤其作為用於治療及/或預防腫瘤學疾病之藥劑之用途。