Results 261 to 270 of about 17,074 (296)

Pyrrole chemistry. XXIV. The Vilsmeier formylation and the cyanation of pyrrole acetals. A synthesis of pyrrole-2,3,5-tricarboxaldehyde

Canadian Journal of Chemistry, 1982
The preparation of the acetals of a number of pyrrole mono- and dicarboxaldehydes is described. It is shown that, provided the reactivity of the unsubstituted ring positions on the pyrrole nucleus is not too low, a carboxyaldehyde or a carbonitrile group may be substituted onto the pyrrole ring using the Vilsmeier reaction or chlorosulfonyl isocyanate
Charles E. Loader, Graham H. Barnett, Hugh J. Anderson   +2 more
openaire   +1 more source

Simple Synthesis of Substituted Pyrroles.

ChemInform, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
Bimal K, Banik, Susanta, Samajdar, Indrani, Banik   +2 more
openaire   +2 more sources

Synthesis of pyrrole and substituted pyrroles (Review)

2017
Pyrrole is widely known as a biologically active scaffold which possesses a diverse nature of activities. The combination of different pharmacophores in a pyrrole ring system has led to the formation of more active compounds. Pyrrole containing analogs are considered as a potential source of biologically active compounds that contains a significant set
Tzankova D., Vladimirova S., Peikova L., Georgieva M.   +3 more
openaire   +1 more source

Pyrrole acetylenecarbaldehydes: an entry to a novel class of functionalized pyrroles

Tetrahedron Letters, 2016
Abstract The first representatives of a previously unknown class of highly reactive functionalized pyrrole compounds, 3-(pyrrol-2-yl)propiolaldehydes, have been synthesized by the transition metal-free, mechanoactivated ethynylation of pyrroles with 3-iodopropiolaldehyde using a solid K 2 CO 3 medium under mild conditions (room temperature, 4 h) in ...
Maxim D. Gotsko, Lyubov N. Sobenina, Denis N. Tomilin, Marina V. Markova, Igor A. Ushakov, Tamara I. Vakul’skaya, Spartak S. Khutsishvili, Boris A. Trofimov   +7 more
openaire   +1 more source

Pyrrole Pigments

Annual Review of Biochemistry, 1950
R, LEMBERG, J W, LEGGE
openaire   +2 more sources

Pyrroles from azaindoles. Synthesis of porphobilinogen and related pyrroles

Journal of the American Chemical Society, 1969
B, Frydman, S, Reil, M E, Despuy, H, Rapoport   +3 more
openaire   +2 more sources

Pyrroles and Fused Pyrroles: Synthesis and Therapeutic Activities

Mini-Reviews in Organic Chemistry, 2013
Mosaad Mohamed, Samar Fathallah
openaire   +1 more source

Bis–Calix[4]pyrroles: Preparation, structure, complexation properties and beyond

Coordination Chemistry Reviews, 2020
Tian Zhao, Jonathan L Sessler, Qing He
exaly  

PYRROLE

Organic Syntheses, 1929
openaire   +1 more source

Pyrroles

1979
Maurice Shamma, David M. Hindenlang
openaire   +1 more source