Stereoselective synthesis of spirocyclic oxindoles based on a one-pot Ullmann coupling/Claisen rearrangement and its application to the synthesis of a hexahydropyrrolo[2,3-b]indole alkaloid
efficient and convenient approach to the synthesis of spirocyclicoxindoles from iodoindoles has been developed. The most striking feature of this approach is that the sequential intramolecular Ullmann coupling and Claisen rearrangement proceeds in a one-pot manner to afford 3-spiro-2-oxindoles in good yield with excellent diastereoselectivity. Application of this one-pot reaction to chiral non-racemic
Benzannulation reactions of Fischer carbene complexes for the synthesis of indolocarbazoles
作者:Craig A. Merlic、Ying You、Daniel M. McInnes、Andrea L. Zechman、Michael M. Miller、Qiaolin Deng
DOI:10.1016/s0040-4020(01)00360-x
日期:2001.6
The synthesis of indolocarbazoles was achieved via photochemical and thermal annulation reactions of chromium Fischercarbenecomplexes. This methodology allows for facile incorporation of hydrogen bonding functionality which complements the pharmacophore contained within bioactive indolocarbazole natural products.
a promising epigenetic drug target for various cancers and immune diseases. In this work, we applied a Cu-catalyzed C–Harylation reaction of N-heteroarene to the synthesis of complex non-covalent PAD4 inhibitors bearing a bi-heteroaryl pharmacophore. This strategy allowed us to access various analogs of C2-aryl substituted benzimidazoles from a common benzimidazole core and easily accessible aryl iodides
Heat Versus Basic Conditions: Intramolecular Dehydro-Diels–Alder Reaction of 1-Indolyl-1,6-heptadiynes for the Selective Synthesis of Substituted Carbazoles
The intramolecular dehydro-Diels–Alder reaction of 1-indolyl-1,6-heptadiynes proceeds smoothly under rather mild heating conditions to give substitutedcarbazoles in moderate to good yields. The reaction of 7-aryl-1-indolyl-1,6-heptadiynes under heating gives the corresponding carbazoles chemoselectively in high yields, whereas the reaction under basic conditions gives naphthalenes as major products
Synthesis of indolocarbazoles via sequential palladium catalyzed cross-coupling and benzannulation reactions
作者:Craig A. Merlic、Daniel M. McInnes
DOI:10.1016/s0040-4039(97)10088-0
日期:1997.11
Differentially substituted indolocarbazoles are readily prepared via a synthetic route employing two palladium catalyzedreactions. First, biindoles are prepared from a palladium catalyzed cross coupling reaction. Second, a new palladium catalyzed benzannulation reaction employing biindolyl iodides and alkynes provides indolocarbazoles.