Iodoacetonitrile and Bromoacetonitrile as Alkylating Reagents for the Nitrogen-Phosphorus Detector
摘要:
Iodoacetonitrile and bromoacetonitrile were used to enhance the sensitivity of chromatographically difficult compounds. Selective derivatization occurs with acidic hydroxyl, amino, and amide functional groups but does not occur for the alcoholic hydroxyl group. Numerous examples of model compounds (e.g,, phenols, organic acids, fatty acids, nonsteroidal antiinflammatory drugs, and xanthines) are given, The use of an element-specific detector for nitrogen-containing compounds is described, and some electron impact GC/MS data are provided for the derivatized model compounds.
Cyanoacetic Acid as a Masked Electrophile: Transition-Metal-Free Cyanomethylation of Amines and Carboxylic Acids
作者:Hongxiang Wang、Ying Shao、Hao Zheng、Hanghang Wang、Jiang Cheng、Xiaobing Wan
DOI:10.1002/chem.201502733
日期:2015.12.7
Using cyanoaceticacid as a maskedelectrophile, a new cyanomethylation reaction of amines and carboxylicacids was developed, producing a variety of α‐aminonitriles and cyanomethyl esters with good yields and excellent functionality tolerance. This protocol features simple manipulation, inexpensive reagents, and a wide substrate scope. Iodoacetonitrile was generated in situ from the iodination–decarboxylation