Development of Cycloisomerization with Rearrangement of a Tosyl Group Using N -Tosyl- o -allenylaniline.
Shohei YoshiokaMasaharu TakatsukiTsunayoshi TakeharaTakeyuki SuzukiMitsuhiro ArisawaPublished in: The Journal of organic chemistry (2023)
Sulfonyl indoles were synthesized by migratory cycloisomerization from the allene N -tosyl- o -allenylaniline. 3-Tosyl indoles or 4-tosyl indoles were selectively produced using a Pd catalyst or a Au catalyst, respectively.