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Beilstein J. Org. Chem. 2024, 20, 2722–2731, doi:10.3762/bjoc.20.230
Graphical Abstract
Figure 1: Selected natural products containing spiro-indolenines.
Scheme 1: Synthesis of spiro[indole-heterocycles].
Scheme 2: Synthetic strategy for the new synthesis of 2,3-diaminoindolenines [21] and spiro[indole-isoquinolines]....
Scheme 3: Scope of the synthesis of spiro[indole-THIQs]. aα-aminoamidine 2b has been isolated (54%) too; bα-a...
Scheme 4: Two-step synthesis using p-methylaniline.
Scheme 5: Investigation of the one-pot four-step synthetic protocol employing N-Ph-benzoxazepine 5.
Figure 2: Time profile of the reaction of N-Ph-THIQ, 3,5-dimethoxyaniline and t-BuNC conducted under optimize...
Scheme 6: Proposed mechanism.