Metal-free photocatalytic cross-electrophile coupling enables C1 homologation and alkylation of carboxylic acids with aldehydes oleh Stefano Bonciolini, Antonio Pulcinella, Matteo Leone, Debora Schiroli, Adrián Luguera Ruiz, Andrea Sorato, Maryne A. J. Dubois, Ranganath Gopalakrishnan, Geraldine Masson, Nicola Della Ca’, Stefano Protti, Maurizio Fagnoni, Eli Zysman-Colman, Magnus Johansson, Timothy Noël