Regioselectivity of Larock Indole Synthesis Using Functionalized Alkynes
2008
SUGINO, Kumi | YOSHIMURA, Hiroshi | NISHIKAWA, Toshio | Isobe, Minoru
Regioselectivity of Larock indole synthesis, a palladium-catalyzed heteroannulation between o-iodoaniline and internal acetylene, was estimated using acetylenes substituted with ester and/or Boc-protected amine at the homopropargylic position and with perbenzyl- and unprotected glucose. Low to moderate regioselectivities were observed in all the cases, indicating these functional groups do not exert good directing effects, in the Larock indole synthesis.
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