112561-41-8

Upstream product

• 17639-64-4 N-p-toluenesulfonylpyrrole 
• 1070-34-4 butanedioic acid, monoethyl ester 
• 14794-31-1 ethyl 3-(chloroformyl)propionate 

Downstream Products

• 1239984-63-4 6-(N-tosyl-2'-pyrrolyl)-4,5-dihydropyridazin-3-one 
• 131226-12-5 t-Butyl N-methyl-N-<4-<1-<(4-methylphenyl)sulfonyl>-2-pyrrolyl>-4-oxobutanoyl>-L-valinate 
• 112561-43-0 Methyl N-methyl-N-<4-<1-<(4-methylphenyl)sulfonyl>-2-pyrrolyl>-4-oxobutanoyl>-L-valinate 
• 112561-42-9 4-<1-<(4-Methylphenyl)sulfonyl>-2-pyrrolyl>-4-oxobutyric acid 

Relevant academic research and scientific papers

TOTAL SYNTHESIS OF LYNGBYATOXIN A (TELEOCIDIN A-1) AND TELEOCIDIN A-2

An eleven step synthesis of tumor promoters, lyngbyatoxin A (=teleocidin A-1) (1) and teleocidin A-2 (2) was achieved from 1-tosylpyrrole (4) using a novel reaction forming 7-alkyl-4-aminoindoles (11).

A new method for the synthesis of 3-aryl-6-(2-pyrrolyl)pyridazines

A new method for the synthesis of 3-halo-6-(N-tosyl-2-pyrrolyl)pyridazine 7 was developed.Suzuki cross-coupling reactions of 7 with arylboronic acids and in situ de-tosylation gave a variety of novel 3-aryl-6-(2-pyrrolyl)pyridazines. It found that protection of the pyrrolyl moiety was necessary for efficient coupling reaction.

PREPARATION OF ALKYL-SUBSTITUTED INDOLES IN THE BENZENE PORTION. Part 3

Three-step synthesis of 7- and 4-alkyl-1-tosylindoles (9 and 10) was accomplished by combination of the Friedel-Crafts acylation of 4, and the treatment of 7 and 8 with H2SO4 in 2-propanol as illustrated in Chart 2.Further a novel synthetic method of 16 was devised from 14 by way of 15.