1.
Org Lett
; 3(21): 3325-7, 2001 Oct 18.
Article
in English
| MEDLINE
| ID: mdl-11594825
ABSTRACT
[reaction: see text]. N-benzoylated quinone imine ketals undergo smooth cycloadditions in a [4 + 2] sense to yield the expected cycloadducts. The crude cycloadducts, when subjected to a short series of simple transformations, produce synthetically useful quantities of 5-methoxyindoles in excellent overall yields.