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Subject: SM, impurity The reaction mixture was heated at 82C for 1 hour and monitored by HPLC (product=68%, SM=11%, impurity at about 12 min=17%, excluding dimethylaminopyridine).
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link 15.01.2005 0:22 |
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impurity здесь, скорее всего, означает примеси. Что такое SM, можно только догадываться. Возможно, starting material. Как, например, тут: "if not otherwise noted, both chemical yields and enantioselectivities (ee) were determined by HPLC on CSP (using separately prepared standards) for a crude reaction mixture and represent average of at least two reactions (two HPLC runs for each reaction). (b) Unless indicated otherwise, one and the same substrate batch was used for all reductions in the corresponding entry. (c) SM - starting material; PR - reduction product; BY - reduction by-product: " Вообще посмотрите по тексту выше, быть может, где-то незаметно проскользнуло обозначение или словосочетание этого таинственного SM. |
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