- Synthetic Method of Amoxapine
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(CAS NO.: ), with other name of Dibenz(b,f)(1,4)oxazepine, 2-chloro-11-(1-piperazinyl)-, could be produced through many synthetic methods.
Following is one of the synthesis routes:
O-(p-chlorophenoxy)aniline hydrochloride (I) could react with ethyl chlorocarbonate (A) in pyridine ether to produce ethyl O-(p-chlorophenoxy)phenylcarbanilate (II), which is condensed with N-carbetoxypiperazine (B) by means of Na2O or NaOCH3 in refluxing benzene to afford ethyl 4-[(O-(p-chlorophenoxy)phenyl)carbamoyl]-1-piperazine carboxylate (III). This product is finally decarboxylated and cyclized with P2O5 in refluxing POCl3.
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