A modular and efficient method for the synthesis of α-substituted 1,2-dihydroquinolines is described. Under mild metal-free conditions, readily available N-carbamoyl 1,2-dihydroquinolines undergo oxidative C-H alkynylation, alkenylation, and allylation with a range of potassium trifluoroborates using TEMPO oxoammonium salt as an oxidant.

Effects of retained austenite on press formability were investigated, using austempered 0.4C-Si-1 .2Mn sheet steels with high tensile strength of more than 980 MPa.The

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