Benzocaine → Ethyl 4-[(3-phenylpropyl)amino]benzoate
Reaction equation
[NH2:1][C:2]1[CH:12]=[CH:11][C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[CH:4][CH:3]=1.Br[CH2:14][CH2:15][CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1.CN(C)P(N(C)C)(N(C)C)=O>O>[C:17]1([CH2:16][CH2:15][CH2:14][NH:1][C:2]2[CH:3]=[CH:4][C:5]([C:6]([O:8][CH2:9][CH3:10])=[O:7])=[CH:11][CH:12]=2)[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
Procedure
A mixture of 33 g. of ethyl p-aminobenzoate, 19.9 g. of (3-bromopropyl)benzene and 80 ml. of hexamethylphosphoramide is heated at 110° C. for 20 hours. The mixture is chilled, diluted with 25 ml. of water, chilled, diluted with 50 ml. of ethanol and filtered. The solid is washed with cold ethanol-water (1:1) to give tan crystals, m.p. 80°-83° C. Two recrystallizations from ethanol give tan crystals, m.p. 87°-89° C.