Functionalized Naphthalenes by Benzotriazole-Mediated Annulation
摘要:
The anions of 3-benzotriazolylphthalide (1) and of 2-(benzotriazolylmethyl)benzonitrile (6) condense regioselectively with a range of Michael accepters to form 1,4-dihydroxynaphthalenes 4b-f and 1-amino-2,3-di(methoxycarbonyl)naphthalene (9) in moderate to good yields.
Functionalized Naphthalenes by Benzotriazole-Mediated Annulation
作者:Katritzky, Alan R.、Zhang, Guifen、Xie, Linghong
DOI:10.1080/00397919708005917
日期:1997.11
The anions of 3-benzotriazolylphthalide (1) and of 2-(benzotriazolylmethyl)benzonitrile (6) condense regioselectively with a range of Michael accepters to form 1,4-dihydroxynaphthalenes 4b-f and 1-amino-2,3-di(methoxycarbonyl)naphthalene (9) in moderate to good yields.
Unsaturated Phosphonates as Hauser Acceptors for the Synthesis of Phosphonylated Dihydroxynaphthalenes and Naphthoquinones
作者:Atul Kumar Chaturvedi、Namrata Rastogi
DOI:10.1021/acs.joc.6b00312
日期:2016.4.15
The unsaturated phosphonates were utilized as Hauser acceptors successfully for the first time. The products phosphonylated 1,4-dihydroxynaphthalenes were isolated in good yields in short reaction time and were further oxidized to the corresponding 1,4-naphthoquinones in quantitative yields. The reaction provides an efficient and straightforward approach for the synthesis of pharmacologically privileged