Title:K2CO3-Promoted Highly Selective N-Hydroxymethylation of Indoles Under Metal- and Lewis Acid-Free Conditions
Volume: 18
Issue: 2
Author(s): Xiao-Yu Zhou*Xia Chen
Affiliation:
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui, 553004,China
Keywords:
Indoles, hydroxymethylation, polyformaldehyde, base-promoted, functionalization, highly selective.
Abstract: Inorganic base promoted highly selective N-hydroxymethylation of indole and its derivatives
have been developed. It provided a simple method for the preparation of N-hydroxymethyl
indoles with polyformaldehyde as reagents under the metal- and Lewis acid-free reaction conditions.
The reaction proceeded smoothly using K2CO3 as base in 1,4-dioxane to produce the corresponding
N-hydroxymethyl indoles with 62%->99% yields.