In:
Journal of the Chinese Chemical Society, Wiley, Vol. 39, No. 6 ( 1992-12), p. 635-639
Abstract:
Three novel reactions for the synthesis of iso‐condensed heteroaromatic pyrroles: (1) tandem intramolecular 1,3‐dipolar cycloaddition and cycloreversion reaction; (2) phosphineimine‐alkylidenemalonate cyclization reaction; (3) retromalonate addition reaction, are described. They can be used in acidic, neutral or basic conditions respectively. Iso‐condensed heteroaromatic pyrroles, such as pyrrolo[3,4‐ b ]indole 12 , pyrrolo[3,4‐ b ]pyridine 17 , pyrrolo[3,4‐ c ]pyridine 18 , thieno[2,3‐ c ]pyrrole 37 , pyrrolo[3,4‐ b ]pyrrole 40 , pyrrolo[3,4‐ b ]pyrazine 49 , benzofuro[2,3‐ c ]pyrrole 50 , 1,2‐bis[5‐thieno[2,3‐ c ]pyrrolyl] ethane 51 , 1,4‐bis[5‐thieno[2,3‐ c ]pyrrolyl] benzene 52 , dipyrrolo[3,4‐ b ;3′,4′‐ d ]dipyrroles 55 and 56 , benzotripyrroles 62–64 , and thieno[3,4‐ c ]pyrroles 67 and 73 are synthesized efficiently according to these methods.
Type of Medium:
Online Resource
ISSN:
0009-4536
,
2192-6549
DOI:
10.1002/jccs.199200098
Language:
English
Publisher:
Wiley
Publication Date:
1992
detail.hit.zdb_id:
2029538-8
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