Gemäss Formelschema werden die Synthesen modifizierter Streptozotocine der Struktur 5 aus N‐Nitroso‐carbamoylaziden 3 und D‐Glucosamin, ihre α‐1,3,4,6‐Tetra‐O‐acetyl‐Derivate 6 und die vergleichsweise aus 1,3,4,6‐Tetra‐O‐acetyl‐β‐D‐glucosamin 7 hergestellten zu 6 anomeren β‐Tetraacetyl‐Derivate 9, beschrieben.
Iodobenzene Dichloride in Combination with Sodium Azide for the Effective Synthesis of Carbamoyl Azides from Aldehydes
作者:Chi Zhang、Xiao-Qiang Li、Xue-Fei Zhao
DOI:10.1055/s-2008-1067196
日期:2008.8
Various aliphatic and aromatic aldehydes are converted into their corresponding carbamoyl azides in good to excellent yields with the use of a combined reagent system of iodobenzenedichloride and sodium azide in acetonitrile under nitrogen.
Gemäss Formelschema werden die Synthesen modifizierter Streptozotocine der Struktur 5 aus N‐Nitroso‐carbamoylaziden 3 und D‐Glucosamin, ihre α‐1,3,4,6‐Tetra‐O‐acetyl‐Derivate 6 und die vergleichsweise aus 1,3,4,6‐Tetra‐O‐acetyl‐β‐D‐glucosamin 7 hergestellten zu 6 anomeren β‐Tetraacetyl‐Derivate 9, beschrieben.
One-Pot Synthesis of Carbamoyl Azides Directly from Primary Alcohols and Oxidation of Secondary Alcohols to Ketones Using Iodobenzene Dichloride in Combination with Sodium Azide
作者:Xiao-Qiang Li、Wei-Kun Wang、Chi Zhang
DOI:10.1002/adsc.200900428
日期:2009.10
An effective synthesis of carbamoyl azides directly from primary alcohols using iodobenzenedichloride in combination with sodium azide has been developed. Moreover, the same regent combination was also efficient for the oxidation of secondary alcohols to the corresponding ketones.