Highly Selective FeCl3-Catalyzed Cyclization of β-Sulfonamidoallenes or β-Allenols and Aldehydes
A FeCl3-catalyzed Prins cyclization reaction of β-sulfonamidoallenes or β-allenols with
aldehydes has been developed for the synthesis of 3-chloromethyl-1, 2, 5, 6-tetrahydro-1 H-
pyridine or 3-chloromethyl-5, 6-dihydro-2 H-pyran. The reaction is highly selective due to the
stability of the allyl cation intermediate.
aldehydes has been developed for the synthesis of 3-chloromethyl-1, 2, 5, 6-tetrahydro-1 H-
pyridine or 3-chloromethyl-5, 6-dihydro-2 H-pyran. The reaction is highly selective due to the
stability of the allyl cation intermediate.
A FeCl3-catalyzed Prins cyclization reaction of β-sulfonamidoallenes or β-allenols with aldehydes has been developed for the synthesis of 3-chloromethyl-1,2,5,6-tetrahydro-1H-pyridine or 3-chloromethyl-5,6-dihydro-2H-pyran. The reaction is highly selective due to the stability of the allyl cation intermediate.
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