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A dearomative allylation of aromatic cyanohydrins with allyl borates and allyl stannanes under palladium catalysis was developed. At the initial stage of this study, the dearomative reaction (C4-substitution of the aromatics) was competing with benzyl substitution. To circumvent this issue, the use of palladium and <i>meta</i>-disubstituted triarylphosphine as the catalyst in a 1:1 ratio was found to enhance the site-selectivity, furnishing the desired dearomatized products. As the productsdoi:10.26434/chemrxiv.11961987 fatcat:uvqkuwgbivceni5kcxh2ffmnky