145215-54-9

Upstream product

• 20541-49-5 bis(p-chlorophenyl) diselenide 
• 145215-53-8 (+/-)-syn-3-(1-methylprop-2-ynyl)tetrahydrofuran-2-one 
• 145215-52-7 (+/-)-syn-3-[2-(2-bromoethyl)-3-methyl-5-(trimethylsilanyl)pent-4-ynoyl]oxazolidin-2-one 

Downstream Products

• 145215-56-1 (+/-)-trans-5-[4-[2-(4-chlorophenylselanyl)ethyl]-3-methyl-5-oxopyrrolidin-2-ylidenemethyl]-3-(2-methoxycarbonylethyl)-4-methyl-1H-pyrrole-2-carboxylic acid, tert-butyl ester 
• 145215-57-2 (+/-)-trans-5-[4-[2-(4-chlorophenylselanyl)ethyl]-3-methyl-5-oxo-1,5-dihydropyrrol-2-ylidenemethyl]-3-(2-methoxycarbonylethyl)-4-methyl-1H-pyrrole-2-carboxylic acid, tert-butyl ester 
• 145215-55-0 (+/-)-syn-2-[2-(4-chlorophenylselanyl)ethyl]-3-methyl-pent-4-ynoic acid amide 

Relevant academic research and scientific papers

New syntheses of the C,D-ring pyrromethenones of phytochrome and phycocyanin

Pyrromethenone 7, the C,D-ring segment of phytochrome (Pr, 4), has been prepared in an efficient fashion employing three new strategies. Each of these has potential advantages for the synthesis of labeled material. Our first approach is related to the Gos

Tetrapyrroles. V. Formal syntheses of the ring-C,D pyrromethenones of phytochrome and phycocyanin

Formal syntheses of pyrromethenones 2 and 3, potential intermediates for the preparation of phycocyanin (5) and phytochrome (4), respectively, have been accomplished by Pd○ mediated coupling of iodopyrrole 7 with acetylenic amides of general st