A new method for enantioselective alkylation of aldehydes has been developed by combining photoredox catalysis and organocatalysis. The reaction uses Ru(bpy)₃Cl₂ as a photoredox catalyst and an imidazolidinone organocatalyst to achieve high enantioselectivity and operational simplicity. The process involves the generation of an electron-rich enamine and an electron-deficient alkyl radical, which then react to form the desired product. The reaction is highly efficient and can be carried out under mild conditions using a household fluorescent light. The study also demonstrates the versatility of the method, showing that a wide range of electron-deficient alkylating agents can be used to form quaternary centers with high enantiocontrol. The reaction mechanism is supported by experimental data and computational studies, which confirm the role of the Ru(bpy)₃²⁺ excited state in the catalytic cycle. The method provides a powerful tool for asymmetric synthesis, enabling the direct coupling of aldehydes with α-bromo ketones or esters. The reaction is efficient and scalable, with high yields and enantiomeric excess. The study highlights the potential of combining photoredox and organocatalytic approaches to solve challenging problems in chemical synthesis.A new method for enantioselective alkylation of aldehydes has been developed by combining photoredox catalysis and organocatalysis. The reaction uses Ru(bpy)₃Cl₂ as a photoredox catalyst and an imidazolidinone organocatalyst to achieve high enantioselectivity and operational simplicity. The process involves the generation of an electron-rich enamine and an electron-deficient alkyl radical, which then react to form the desired product. The reaction is highly efficient and can be carried out under mild conditions using a household fluorescent light. The study also demonstrates the versatility of the method, showing that a wide range of electron-deficient alkylating agents can be used to form quaternary centers with high enantiocontrol. The reaction mechanism is supported by experimental data and computational studies, which confirm the role of the Ru(bpy)₃²⁺ excited state in the catalytic cycle. The method provides a powerful tool for asymmetric synthesis, enabling the direct coupling of aldehydes with α-bromo ketones or esters. The reaction is efficient and scalable, with high yields and enantiomeric excess. The study highlights the potential of combining photoredox and organocatalytic approaches to solve challenging problems in chemical synthesis.