
[有化] 鹽酸羟胺
A classical method to determine the content of cinnamaldehyde is called hydrochloride hydroxylamine—pyridine oximation.
探讨一種無吡啶鹽酸羟胺肟化法測定肉桂醛的可行性。
Finally, the best derivatization condition was confirmed, using acetic glycoside as acetylation reagent, hydroxylamine hydrochloride as the catalyst, acetylating for 30 minutes in the 90℃water.
最終确定在用醋酸苷作為乙酰化試劑,鹽酸羟胺作為催化劑,在水浴90℃條件下乙酰化30分鐘為最佳衍生化條件。
Aromatic dinitriles were prepared with excellent yields by refluxing the corresponding aromatic dialdehydes with hydroxylamine hydrochloride in 85% formic acid or glacial acetic acid.
芳香族二醛與羟胺*********在85%甲酸或冰醋酸中回流可制備相應的芳香族二腈。 方法簡便,産率高。
The radical 2 as an electron donor underwent a rapid photo-induced redox reaction in carbon tetrachloride leading to the formation of the corresponding piperidine hydroxylamine hydrochloride.
自由基2作為電子給體在************中可發生光誘導的氧化還原反應,導緻生成相應的哌啶羟胺*********;
Nitriles were obtained in high yields by One—pot method from aldehydes and hydroxylamine hydrochloride in acetic acid or 85% formic acid.
醛與羟胺*********在85%甲酸或冰醋酸申加熱可制備腈。方法簡便,産率高。
Nitriles were obtained in high yields by One-pot method from aldehydes and hydroxylamine hydrochloride in acetic acid or 85% formic acid.
醛與羟胺*********在85%甲酸或冰醋酸中加熱可制備腈。方法簡便,産率高。
Methods The target compound(1)was prepared from erythromycin A(3)and hydroxylamine hydrochloride in a novel acid base buffer.
方法在酸堿緩沖溶液中由紅黴素A(3 )與鹽酸羟胺縮合生成1。
The synthesis of hydroxylamine sulfate(HAS) from H_2SO_4 and hydroxylamine hydrochloride using reaction-extraction coupling technology has been stu***d.
以鹽酸羟胺和硫酸為原料,研究了采用反應萃取耦合技術合成************的方法。
羟基胺鹽酸鹽(hydroxylamine hydrochloride)是一種重要的無機化合物,化學式為NH2OH·HCl,常溫下為白色結晶性粉末。以下從化學性質、應用領域和安全性三個方面進行專業解析:
1. 化學性質與結構 羟基胺鹽酸鹽由羟胺(NH2OH)與鹽酸反應生成,其結構中同時含有氨基(-NH2)和羟基(-OH)官能團。該化合物易溶于水和乙醇,水溶液呈弱酸性(pH約3.5),但在高溫下易分解生成氮氧化物、氨和氯化氫氣體。其還原性顯著,在分析化學中常用于将高價金屬離子還原為低價态(來源:美國國家生物技術信息中心PubChem數據庫)。
2. 主要應用領域 •有機合成:作為溫和還原劑用于制備肟類化合物,例如将醛/酮轉化為肟,在藥物中間體合成中起關鍵作用(來源:《有機合成反應手冊》第5版)。 •制藥工業:參與頭孢菌素類抗生素的合成工藝,也是維生素B6生産的重要原料。 •分析化學:用于分光光度法測定鐵、釩等金屬離子濃度(來源:分析化學核心期刊《Analytical Chemistry》)。
3. 安全與儲存規範 該化合物具有刺激性,接觸皮膚可能引發皮炎,吸入粉塵會導緻呼吸道損傷。儲存需避光密封于陰涼處(建議溫度<25℃),與氧化劑、強堿分開存放。分解反應方程式為: $$ 4NH_2OH·HCl xrightarrow{Delta} 2NH_3↑ + 3H_2O + N_2O↑ + 4HCl↑ $$ (安全數據參考:美國化學會《實驗室化學品安全指南》)
Hydroxylamine hydrochloride(鹽酸羟胺)是一種無機化合物,以下是其詳細解釋及主要特性:
如需更詳細的生産商信息或實驗數據,可參考科研數據庫或安全數據表(SDS)。
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