Ba. Bozso et al., A VERSATILE AND EFFICIENT METHODOLOGY FOR THE PREPARATION OF CHOLINE ESTER AUXIN CONJUGATES, Phytochemistry, 40(4), 1995, pp. 1027-1031
A two-step synthetic strategy affords indole-3-acetylcholine (IAC) fro
m indole-3-acetic acid (IAA) via the intermediacy of 2-dimethylaminoet
hyl indole-3-acetate. Thus, treatment of indole-3-acetate with 1-dimet
hylamino-2 chloroethane, followed by methylation with methyl iodide, y
ields 55-70% recrystallized IAC from IAA. Using the same methodology,
six analogues of IAC have been prepared in overall yields ranging from
40 to 60%.