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ChemicalBook CAS DataBase List 4-(2-BROMO-PHENYL)-PIPERAZINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER
494773-35-2

4-(2-BROMO-PHENYL)-PIPERAZINE-1-CARBOXYLIC ACID TERT-BUTYL ESTER synthesis

9synthesis methods
-

Yield: 91%

Reaction Conditions:

in ethanol at 30;

Steps:

2
The above solid was dissolved in 100 ml of absolute ethanol, and Boc2O13.1g (0.06mo1) was added, and the mixture was stirred at 30 ° C until the reaction was completed, concentrated to dryness under reduced pressure, and crystallized from n-hexane-ethyl acetate to obtain4- (2-Bromophenyl) piperazine-1-carboxylic acid tert-butyl ester18.6g, yield 91%.

References:

Jiangsu Haosen Pharmaceutical Group Co., Ltd.;Cao Jin;You Junhui;Du Zuyin;Zhao Junjun;Qi Gaofei CN104829558, 2020, B Location in patent:Paragraph 0066; 0067; 0070; 0071

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