Synthesis and alkyne-coupling chemistry of cyclomanganated 1- and 3-acetylindoles, 3-formylindole and analogues
摘要:
The syntheses are reported of new cyclomanganated indole derivatives (1-acetyl-kappa O-indolyl-kappa C-2)dicarbonylbis(trimethylphosphite)manganese (2), (1-methyl-3-acetyl-kappa O-indolyl-kappa C-2)tetracarbonylmanganese (4), (3-formyl-kappa O-indolyl-kappa C-2)tetracarbonylmanganese (5a) and (1-methyl-3-formyl-kappa O-indolyl-kappa C-2)tetracarbonylmanganese (5b). The unusually complicated crystal structure of 5b has been determined, the first for a cyclomanganated aryl aldehyde.The preparations of a mitomycin-related pyrrolo-indole and related products by thermally promoted and oxidatively (Me3NO) initiated alkyne-coupling reactions of the previously known complex (1-acetyl-kappa O-indolyl-kappa C-2)tetracarbonylmanganese (1) are reported for different alkynes and solvents. X-ray crystal structures are reported for the dimethyl acetylenedicarboxylate coupling product of 1 (dimethyl 1-methyl-1-hydroxypyrrolo[1,2a]-indole-2,3-dicarboxylate; 6a), and an unusually-cyclised triple insertion product 8 from the coupling of acetylene with 4, in which a cyclopentadiene moiety is eta(3)-allyl-coordinated to Mn through only one double bond and an exocyclic carbon, but which rearranges on heating to an eta(5)-cyclopentadienyl complex. (c) 2005 Elsevier B.V. All rights reserved.
Selective Wittig Reactions for the Synthesis of Variously Substituted 2-Vinylindoles
作者:Manfred Eitel、Ulf Pindur
DOI:10.1055/s-1989-27253
日期:——
Three selective variants of the Wittig reaction for the syntheses of 2-vinylindoles are described. The reactions are relatively easy to perform, exhibit E-selectivity, and are characterized by a good flexibility with regard to the functional groups present in the vinyl moiety.
EITEL, MANFRED;PINDUR, ULF, SUNTHESIS,(1989) N, C. 364-367
作者:EITEL, MANFRED、PINDUR, ULF
DOI:——
日期:——
Synthesis and alkyne-coupling chemistry of cyclomanganated 1- and 3-acetylindoles, 3-formylindole and analogues
作者:Gary J. Depree、Lyndsay Main、Brian K. Nicholson、Nicholas P. Robinson、Geoffrey B. Jameson
DOI:10.1016/j.jorganchem.2005.09.049
日期:2006.2
The syntheses are reported of new cyclomanganated indole derivatives (1-acetyl-kappa O-indolyl-kappa C-2)dicarbonylbis(trimethylphosphite)manganese (2), (1-methyl-3-acetyl-kappa O-indolyl-kappa C-2)tetracarbonylmanganese (4), (3-formyl-kappa O-indolyl-kappa C-2)tetracarbonylmanganese (5a) and (1-methyl-3-formyl-kappa O-indolyl-kappa C-2)tetracarbonylmanganese (5b). The unusually complicated crystal structure of 5b has been determined, the first for a cyclomanganated aryl aldehyde.The preparations of a mitomycin-related pyrrolo-indole and related products by thermally promoted and oxidatively (Me3NO) initiated alkyne-coupling reactions of the previously known complex (1-acetyl-kappa O-indolyl-kappa C-2)tetracarbonylmanganese (1) are reported for different alkynes and solvents. X-ray crystal structures are reported for the dimethyl acetylenedicarboxylate coupling product of 1 (dimethyl 1-methyl-1-hydroxypyrrolo[1,2a]-indole-2,3-dicarboxylate; 6a), and an unusually-cyclised triple insertion product 8 from the coupling of acetylene with 4, in which a cyclopentadiene moiety is eta(3)-allyl-coordinated to Mn through only one double bond and an exocyclic carbon, but which rearranges on heating to an eta(5)-cyclopentadienyl complex. (c) 2005 Elsevier B.V. All rights reserved.