Preparation of 4-ethynylbenzaldehyde_Kain Industrial Additive

background[1] 4-ethynylbenzaldehyde is an organic synthesis intermediate and pharmaceutical intermediate. it can be used in organic synthesis reactions and pharmaceutical research and development processes in laboratory research and development. preparation[1-2] method 1: 4-ethynylbenzaldehyde is prepared as follows: step 1, in dmso solvent system, react carbazole, hexyl bromide and 50% sodium hydroxide aqueous solution at a…