开发了一种新的、简单有效的合成1-oxa-4-aza-spirooxazolines的方法。该反应在室温下使用玫瑰红作为有机光氧化还原催化剂和蓝色 LED 作为光源进行。据观察,醌与叠氮乙烯在 CO 双键而不是 CC 双键上发生螺环化反应,通过该反应,各种相应的各种相应的 1-oxa-4-aza-spirooxazolines 以良好至优异的产率合成。
Regio- and stereoselective hydroxybromination and dibromination of olefins using ammonium bromide and oxone®
作者:Arun Kumar Macharla、Rohitha Chozhiyath Nappunni、Narender Nama
DOI:10.1016/j.tetlet.2012.01.026
日期:2012.3
synthesis of vicinal bromohydrins and dibromides fromolefins is presented. Various olefins are regio- and stereoselectively hydroxybrominated and dibrominated with anti fashion, following Markonikov’s rule, using eco-friendly, non-toxic, and stable reagents such as NH4Br and oxone® in CH3CN/H2O (1:1) and CH3CN without employing catalyst in moderate to excellent yields. Bromohydrins are formed instantaneously
Visible-Light-Induced Regioselective C(sp<sup>3</sup>)-H Acyloxylation of Aryl-2<i>H-</i>azirines with (Diacetoxy)iodobenzene
作者:Aramita De、Sougata Santra、Alakananda Hajra、Grigory V. Zyryanov、Adinath Majee
DOI:10.1021/acs.joc.9b01625
日期:2019.9.20
A visible-light-promoted regioselective coupling of C(sp(3))-H of aryl-2H-azirine and (diacetoxy)-iodobenzene has been reported. Rose Bengal as an organo-photoredox catalyst has been used in this reaction. The reaction proceeds under aerobic condition at room temperature. A variety of aryl-2H-azirines gives the corresponding acyloxylated azirines under this reaction conditions. The reaction goes through a radical pathway. The protocol is also applicable on gram-scale synthesis.
Bokeriya,E.N. et al., Journal of Organic Chemistry USSR (English Translation), 1979, vol. 15, p. 1944 - 1949
作者:Bokeriya,E.N. et al.
DOI:——
日期:——
BOKERIYA EH. N.; VIKTOROVA V. S.; KAREGISHVILI L. I.; KOVYRZINA K. A.; KU+, ZH. ORGAN. XIMII, 1979, 15, HO 10, 2147-2153,
作者:BOKERIYA EH. N.、 VIKTOROVA V. S.、 KAREGISHVILI L. I.、 KOVYRZINA K. A.、 KU+