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ChemicalBook CAS DataBase List 1-(TERT-BUTOXYCARBONYL)-4-OXOPYRROLIDINE-2-CARBOXYLIC ACID
876317-19-0

1-(TERT-BUTOXYCARBONYL)-4-OXOPYRROLIDINE-2-CARBOXYLIC ACID synthesis

3synthesis methods
40350-82-1 Synthesis
1-(tert-butoxycarbonyl)-4-hydroxypyrrolidine-2-carboxylic acid

40350-82-1
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Yield:876317-19-0 100%

Reaction Conditions:

with 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical;trichloroisocyanuric acid in dichloromethane at 20; for 1 h;Concentration;

Steps:

2

Compound2 (178g, 0.77mol) dissolved in dichloromethane (2.0L), adding stirring trichloroisocyanuric acid (178.89g, 0 . 77mol), then adding 2, 2, 6, 6-tetramethyl piperidine oxide (6.05g, 0 . 0385mol), room temperature reaction 1h, then quenching with water, the filtration of the insolubles, the aqueous phase is extracted with methylene chloride several times, combined with the phase, drying and vacuum concentrated to dry, to obtain compound3 (180g), the yield is 100%.

References:

CN105503891,2016,A Location in patent:Paragraph 0008; 0016

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