1-Piperazinecarboxylic acid, phenyl ester synthesis
- Product Name:1-Piperazinecarboxylic acid, phenyl ester
- CAS Number:50606-33-2
- Molecular formula:C11H14N2O2
- Molecular Weight:206.24
Yield:50606-33-2 95.1%
Reaction Conditions:
in ethyl acetate at 20; for 2 h;
Steps:
9 Example 9 Synthesis of 1-phenoxycarbonyl-piperazine
86g of piperazine was added to 500ml of ethyl acetate at room temperature, 78g of phenyl chloroformate was added dropwise with stirring at 20 ° C, and the mixture was stirred for 2 hours while dripping.The mixture was washed with aqueous potassium carbonate solution, dried and concentrated to give 98 g of a colorless oil (solidified on cooling). The yield was 95.1% (based on phenyl chloroformate)
References:
CN104829588,2017,B Location in patent:Paragraph 0101; 0102; 0103; 0104
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