On November 14, 2003, Tanoury, Gerald J.; Hett, Robert; Wilkinson, H. Scott; Wald, Stephen A.; Senanayake, Chris H. published an article.Reference of 1-(4-(4-Hydroxyphenyl)piperazin-1-yl)ethanone The title of the article was Total synthesis of (2R,4S,2’S,3’R)-hydroxyitraconazole: implementations of a recycle protocol and a mild and safe phase-transfer reagent for preparation of the key chiral units. And the article contained the following:
A convergent total synthesis of enantiomerically-pure (2R,4S,2’S,3’R)-hydroxyitraconazole is described. The left dioxolane portion of the mol. was prepared in good yield by the conversion of (4S)-2,2-dimethyl-1,3-dioxolane-4-methanol to the corresponding enantiomerically and diastereomerically-pure acetonide (2R,4R)-2-(2,4-dichlorophenyl)-2-(1H-1,2,4-triazol-1-ylmethyl)-1,3-dioxolane-4-methanol by a recycle protocol involving diastereoselective crystallization of the tosylate salt, followed by re-equilibration of the mother liquor and crystallization The right-hand triazolone moiety was generated by alkylation of a triazolone derivative with an enantiomerically pure cyclic sulfate [(4R,5R)-4,5-dimethyl-1,2,3-dioxathiolane 2,2-dioxide] under mild and essentially non-hazardous reaction conditions (TDA-1, K2CO3, acetonitrile). The experimental process involved the reaction of 1-(4-(4-Hydroxyphenyl)piperazin-1-yl)ethanone(cas: 67914-60-7).Reference of 1-(4-(4-Hydroxyphenyl)piperazin-1-yl)ethanone
The Article related to hydroxyitraconazole total synthesis preparation, tda cost effective hydroxyitraconazole total synthesis preparation, alkylation tda cost effective hydroxyitraconazole total synthesis preparation, cost effective hydroxyitraconazole total synthesis preparation, asym synthesis hydroxyitraconazole preparation and other aspects.Reference of 1-(4-(4-Hydroxyphenyl)piperazin-1-yl)ethanone
Referemce:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics