Derivation of elementary reaction about 1334177-86-4

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A balanced equation for a chemical reaction indicates what is reacting and what is produced, but it reveals nothing about how the reaction actually takes place. The reaction mechanism is the process, or pathway, by which a reaction occurs.1334177-86-4, name is 1-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3-oxo-7,10,13,16,19,22,25,28-octaoxa-4-azahentriacontan-31-oic acid. An updated downstream synthesis route of 1334177-86-4 as follows., 1334177-86-4

EDCI hydrochloride (8 mg, 0.042 mmol) was added to a suspension of Maleimide-PEG8-acid(25 mg, 0.042 mmol) in dry CH2CI2 (4 mL) under argon atmosphere. PBD 19 (42 mg, crude)was added straight away and stirring was maintained until the reaction was complete (3hours). The reaction was diluted with CH2CI2 and the organic phase was washed with H20 and brine before being dried over MgSO4, filtered and excess solvent removed by rotary evaporation under reduced pressure by rotary evaporation under reduced pressure. The product was purified by careful silica gel chromatography (slow elution starting with 100%CHCI3 up to 9:1 CHCI3/MeOH) followed by reverse phase HPLC to remove unreacted maleimide-PEG8-acid. The product 20 was isolated in 10% over two steps (6.6 mg). LC/MS 1.16 mm (ES+) m/z (relative intensity) 770.20 ([M + 2H], 40%).

Thank you very much for taking the time to read this article. If you are also interested in other aspects of 1-(2,5-Dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3-oxo-7,10,13,16,19,22,25,28-octaoxa-4-azahentriacontan-31-oic acid, you can also browse my other articles.

Reference£º
Patent; SPIROGEN SARL; ADC THERAPEUTICS SARL; HOWARD, Philip Wilson; VAN BERKEL, Patricius, Hendrikus, Cornelis; WO2015/52535; (2015); A1;,
Pyrroline – Wikipedia
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