Griffith, Journal of the Chemical Society, 1924, vol. 125, p. 2627
作者:Griffith
DOI:——
日期:——
Convenient Synthesis of 6-Methoxyindole and 6-Methoxytryptophyl Bromide
作者:Paul L. Feldman、Henry Rapoport
DOI:10.1055/s-1986-31759
日期:——
A preparatively convenient synthesis of 6-methoxyindole (7) and 6-methoxytryptophylbromide (11) is presented starting with p-cresol (1). Regioselctive nitration of p-cresol carbonate (2) followed by hydrolysis of the carbonate and methylation gives 4-methoxy-2-nitrotoluene (5) which is converted to 7 by the Batcho-Leimgruber indole synthesis. Subsequent oxalylation of 7 followed by esterification reduction and bromination yields 6-methoxytryptophyl bromide (11). The overall yield of 7 and 11 from p-cresol is 43% and 25%, respectively.