Pivaloyl chloride → HCID 23335544, compound
Reaction equation
[O:1]1[CH2:16][CH:2]1[CH2:3][O:4][C:5]1[CH:13]=[CH:12][CH:11]=[C:10]2[C:6]=1[CH:7]=[C:8]([CH2:14][OH:15])[NH:9]2.[C:17](Cl)(=[O:22])[C:18]([CH3:21])([CH3:20])[CH3:19]>N1C=CC=CC=1>[O:1]1[CH2:16][CH:2]1[CH2:3][O:4][C:5]1[CH:13]=[CH:12][CH:11]=[C:10]2[C:6]=1[CH:7]=[C:8]([CH2:14][O:15][C:17](=[O:22])[C:18]([CH3:21])([CH3:20])[CH3:19])[NH:9]2Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
11.5 g. 4-(2,3-epoxypropoxy)-2-hydroxymethyl-indole (see U.S. Pat. No. 3,705,907) were dissolved in 100 ml. pyridine. To this solution were added dropwise, while cooling to 0° - 5° C., 6.5 g. (6.7 ml.) pivaloyl chloride. After an hour, the reaction mixture was poured on to ice and extracted with diethyl ether. The ethereal solution was successively washed with dilute sulfuric acid, aqueous sodium bicarbonate solution and water. After drying and treating with active charcoal, the solution was filtered and evaporated. The residue (13 g.; 82% of theory) crystallized upon triturating with diethyl ether/ligroin to give 4-(2,3-epoxypropoxy)-2-pivaloyloxymethyl-indole; m.p. 129° - 131° C.