Potassium<i>N</i>-Iodo<i>p</i>-Toluenesulfonamide (TsNIK, Iodamine-T): A New Reagent for the Oxidation of Hydrazones to Diazo Compounds
作者:Simon M. Nicolle、Christopher J. Moody
DOI:10.1002/chem.201304656
日期:2014.4.7
A new reagent for the oxidation of hydrazones to diazo compounds is described. N‐Iodo p‐toluenesulfonamide (TsNIK, iodamine‐T) allows the preparation of α‐diazoesters, α‐diazoamides, α‐diazoketones and α‐diazophosphonates in good yield and in high purity after a simple extractive work‐up. α‐Diazoesters were also obtained in high yield from the corresponding ketones through a one‐pot process of hydrazone
Stereoselective Synthesis of Functionalized Pyrrolidines by the Diverted N−H Insertion Reaction of Metallocarbenes with β-Aminoketone Derivatives
作者:Simon M. Nicolle、William Lewis、Christopher J. Hayes、Christopher J. Moody
DOI:10.1002/anie.201511433
日期:2016.3.7
metal‐catalyzed diverted N−H insertion of a range of diazocarbonyl compounds with β‐aminoketone derivatives is described. A number of catalysts (rhodium(II) carboxylate dimers, copper(I) triflate, and an iron(III) porphyrin) are shown to promote the process under mild conditions to give a wide range of highly substituted proline derivatives. The reaction starts as a metallocarbene N−H insertion but is