Corroles and oxacorroles were synthesized by acid-catalyzed, 2+2 condensation. The condensation afforded different corroles bearing core-heteroatoms at the predesignated locations. Regioselective α-α’ linkage between pyrrole and furan or between pyrrole and pyrrole was achieved by keeping the linking carbon at different position of starting dipyrromethanes. The condensation was only fruitful wh...

2-(methylthio)-1,4-diaryl-2-butene-1,4-dione (3) are prepared from readily available aryl methyl ketones in the presence of copper(II) oxide, iodine, and dimethyl sulfoxide. The success of the cross-coupling reaction of 4-chloroacetophenone with 2-acetylthiophene confirms a proposed self-sorting tandem reaction mechanism. Both Z- and E-isomers of compound 3 are readily converted into the corres...

The sterically encumbered pyrrolyl KPyr(tBu2) (1-K, Pyr(tBu2) = 2,5-(Me3C)2C4H2N) reacts with PCl3, (iPr)2PCl and Ph2PCl exclusively at the C3-position to yield a series of phosphine-substituted pyrroles HPyr(tBu2R) (R = PCl2 (2-H), (iPr)2P (4-H) and Ph2P (5-H)). Pyrrole 2-H can further be functionalized with MeLi (3 equiv.) to yield LiPyr(tBu2PMe2) (3-Li). The coordination chemistry of these p...

It has been documented that 5-methylene-Meldrum's acid derivatives (1, 12 ) and their enols (2, 13) can undergo fragmentation to malonic anhydrides (4, 19 ), carboxyketenes (3, 16) and methyleneketene (5, 21 , 35 ), as well as cyclization to pyrrole-3-one and thiophene-3-one derivatives 11a,b (but not furan-3-ones 11c ) under the conditions of flash vacuum thermolysis (FVT). Here we report theo...

PtCl2 effectively catalyzes the multistep reaction of N-methyl indole (1 a) with pent-3-yn-1-ol (2 a) in THF at room temperature for 2 h to give indole derivative 3 a, which contains a five-membered cyclic ether group at C3 in 93% yield. Under similar reaction conditions, various substituted N-methyl indoles 1 b-h and indole (1 i) reacted efficiently with 2 a to afford the corresponding indole ...

The 1H and 13C NMR resonances for a novel distamycin conjugate, 3-[1-methyl-4-[1-methyl-4-[1-methyl-4-[N1 -[5methyl-2,4(1H,3H)pyrimidinedione]acetylamino]pyrrole-2-carboxamido]pyrrole-2-carboxamido]pyrrole-2carboxamido]propionamidine hydrochloride (1), were assigned, using the concerted application of oneand two-dimensional NMR techniques including nuclear Overhauser effect difference, DEPT, HM...

The asymmetric unit of the title compound, C(26)H(36)N(2)O(8), comprises two independent mol-ecules. In each mol-ecule, the two pyrrole rings are linked by a -CH(2)CH(2)- bridge, with dihedral angles between the two pyrrole rings of 14.5 (3) and 16.4 (3)° in the two mol-ecules. Each pyrrole ring carries 2- and 5-methyl substituents and eth-oxy-carbonyl groups at the 3- and 5-positions.