Ethanol → (4,4-Dibutylthiochroman-6-yl)acetylene

Reaction equation

[CH2:3]([CH2:4][CH2:5][CH3:6])[C:7]1([CH2:23][CH2:24][CH2:25][CH3:26])[CH2:8][CH2:9][S:10][c:11]2[cH:12][cH:13][c:14]([C:17]#[C:18][Si:19]([CH3:20])([CH3:21])[CH3:22])[cH:15][c:16]21.[CH3:28][CH2:29][OH:30].[K+:2].[OH-:1].[OH2:27]>>[CH2:3]([CH2:4][CH2:5][CH3:6])[C:7]1([CH2:23][CH2:24][CH2:25][CH3:26])[CH2:8][CH2:9][S:10][c:11]2[cH:12][cH:13][c:14]([C:17]#[CH:18])[cH:15][c:16]21