Chinese Journal of Organic Chemistry ›› 2022, Vol. 42 ›› Issue (9): 2814-2822.DOI: 10.6023/cjoc202204057 Previous Articles     Next Articles

ARTICLES

溶剂调控的α-芳基α-重氮酯与2,3-二氯-5,6-二氰基-1,4-苯醌(DDQ)的去重氮化氧合反应

贾润红a,*(), 刘帅b, 王世超b, 郝文娟b, 姜波b,*()   

  1. a 连云港师范高等专科学校初等教育学院 江苏连云港 222006
    b 江苏师范大学化学与材料科学学院 江苏徐州 221116
  • 收稿日期:2022-04-24 修回日期:2022-06-16 发布日期:2022-06-29
  • 通讯作者: 贾润红, 姜波
  • 基金资助:
    国家自然科学基金(21971090)

A Solvent-Regulated Dediazotized Oxygenation of α-Aryl α-Diazoesters and 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ)

Runhong Jiaa(), Shuai Liub, Shichao Wangb, Wenjuan Haob, Bo Jiangb()   

  1. a Elementary Education College, Lianyungang Normal College, Lianyungang, Jiangsu 222006
    b School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, Jiangsu 221116
  • Received:2022-04-24 Revised:2022-06-16 Published:2022-06-29
  • Contact: Runhong Jia, Bo Jiang
  • Supported by:
    National Natural Science Foundation of China(21971090)

A new metal-free, solvent-regulated dediazotized oxygenation of α-aryl α-diazo esters and 2,3-Dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) is reported. The reaction of α-aryl α-diazo esters and DDQ in 2∶1 molar ratio in dichloromethane (DCM) underwent double dediazotized O—H bond insertion reactions to access α,α'-(1,4- phenyldioxy)diesters as major products, whereas a series of structurally complex α,α-diaryloxy esters were provided with moderate to good yields when the reaction of these substrates in 3∶2 molar ratio in dichloroethane (DCE) proceeded through a double dediazotized O—H bond insertion and dediazotized deoxygenation cascade. The controlled experiments confirmed that the hydrogen atom is from water during O—H bond insertion process. In addition, the reaction featured mild conditions, simple operation and controllable chemoselectivity without any catalyst.

Key words: oxygenation, dediazotization, chemoselectivity, divergent synthesis