Yokoi, Taiki Tanimoto, Hiroki Ueda, Tomomi Morimoto, Tsumoru Kakiuchi, Kiyomi Site-Selective Conversion of Azido Groups at Carbonyl α‑Positions to Diazo Groups in Diazido and Triazido Compounds This paper reports on the selective conversion of alkyl azido groups at the carbonyl α-position to diazo compounds. Through β-elimination of dinitrogen, followed by hydrazone formation/decomposition, α-azidocarbonyl moieties were transformed into α-diazo carbonyl groups in one step. As these reaction conditions do not involve aryl or general alkyl azides, site-selective conversions of di- and triazides were achieved. Through this method, the successive site-selective conjugation of the triazido molecule with three different components is demonstrated. site-selective conversions;carbonyl α- position;reaction conditions;Diazo Groups;site-selective conjugation;paper reports;α- diazo carbonyl groups;alkyl azido groups;β- elimination;alkyl azides;Site-Selective Conversion;Azido Groups;diazo compounds;Triazido Compounds;triazido molecule 2018-09-26
    https://acs.figshare.com/articles/dataset/Site-Selective_Conversion_of_Azido_Groups_at_Carbonyl_Positions_to_Diazo_Groups_in_Diazido_and_Triazido_Compounds/7138043
10.1021/acs.joc.8b02074.s003