868615-18-3Relevant academic research and scientific papers
A convenient synthesis of 1-aralkyl-4-benzylpiperazine derivatives
Hu, Xiao,Chen, Hui,Wu, Wei-Jun,Wang, Wen-Ling,Wang, Jin
, p. 519 - 520 (2016/10/05)
An efficient two-step route was developed for the synthesis of 1-aralkyl-4-benzylpiperazine derivatives by a Blanc reaction and alkylation. The key intermediate, N-benzylpiperazine, was prepared in an excellent yield by direct benzylation of commercially available piperazine under metal-free conditions.
Novel intermediates, process for their preparation and synthesis of 1, 4-benzoquiones
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Page/Page column 4, (2008/12/09)
The present invention discloses a new process for the preparation of 1,4-benzoquiones of formula (II) wherein R1, R2, R3 and R4 are independently selected from the group consisting of branched or unbranched C1-C6 alkyl, phenyl and benzyl, wherein phenyl and benzyl is optionally substituted by one or more substituent independently selected from the group consisting of C1-C6 alkyl and halogen, and wherein C1-C6 alkyl is optionally substituted with one or more halogen susbstituents, and wherein R2 and R3 together can form a C1-C6-alkylene radical, optionally substituted by one or more susbstituents independently selected from the group comprising C1-C6, benzyl, phenyl and halogen. One preferred compound is 2,3-dimethoxy-5-methyl-[1,4]benzoquinone, also known as coenzyme Q0 (CoQ0). Also disclosed are novel compounds and intermediates, and a method for the preparation of coenzyme Qn, preferable the coenzyme Q10. Also disclosed is a method for continuous synthesis of 1,4-benzoquiones in a continuous flow reactor.
