To a dry round bottom flask with stirrer, vinylmagnesium bromide (11.9 mL, 11.924 mmol, 1.600 eq) solution was added and cooled down to 0ºC. Hydrocinnamaldehyde (1.000 g, 7.453 mmol, 1.000 eq) was added dropwise over 15 min and kept 45 min more at 0 ºC. Then, the reaction was allowed to warm to room temperature (298 ºC) and kept under stirring for 1 h. The reaction was quenched by the addition of cold MeOH until effervescence ceased. The resulting suspension was treated with aqueous H2SO4 (1M) until the suspension became homogeneous. The solution was diluted with CH2Cl2 and the phases separated with an addition funnel. The aqueous phase and washed with CH2Cl2 (2x20 mL). The combined organic layers were dried with MgSO4 and evaporated to give the product as a colorless oil (1.14 g, 94% yield). 5-Phenyl-1-penten-3-ol (1t)