最先进的烯烃羟基叠氮化策略,产生β-叠氮醇和β-叠氮过氧化物的混合物,必须依靠膦试剂来提高化学选择性。为了克服上述问题,我们提出了一种通过 O 2中锰介导的配体到金属电荷转移 (LMCT) 进行烯烃的光化学羟基叠氮反应,将 N 3 –活化为•N 3并结合 O 2用作氧来源为羟基叠氮化产物。还证明了羟基叠氮化转化的广泛烯烃范围和步骤经济化学。
Concurrent Formation of N–H Imines and Carbonyl Compounds by Ruthenium-Catalyzed C–C Bond Cleavage of β-Hydroxy Azides
作者:Jeong Min Lee、Dae Young Bae、Jin Yong Park、Hwi Yul Jo、Eunsung Lee、Young Ho Rhee、Jaiwook Park
DOI:10.1021/acs.orglett.0c01145
日期:2020.6.19
A commercial cyclopentadienylrutenium dicarbonyl dimer ([CpRu(CO)2]2) efficiently catalyzes the formation of N–H imines and carbonyl compounds simultaneously from β-hydroxy azides via C–Cbond cleavage under visible light. Density functional theory calculations for the cleavage reaction support the mechanism involving chelation of alkoxy azide species and liberation of nitrogen as the driving force
Regio- and diastereoselective formation of 1,2-azidohydroperoxides by photooxygenation of alkenes in the presence of azide anions
作者:Axel G. Griesbeck、Thomas Hundertmark、Jörg Steinwascher
DOI:10.1016/0040-4039(96)01932-6
日期:1996.11
1,2-Azidohydroperoxides are accessible from alkenes when irradiated in the presence of azideanions, oxygen and an appropriate sensitizer. The results of substrate/sensitizer variations indicate a reaction initiated by electron transfer to give the sensitizer radical anion and azidyl radicals. The latter efficiently add to alkenes producing carbon radicals which are trapped by molecular oxygen.
reagents to improve the chemoselectivity. To overcome the above problems, we present a photochemical hydroxyazidation of alkenes via Mn-mediated ligand-to-metal charge transfer (LMCT) in O2, which activates N3– to •N3 and incorporates O2 to be used as an oxygen source in the hydroxyazidation products. Broad alkene range and step-economy chemistry for the hydroxyazidation transformation were also demonstrated
最先进的烯烃羟基叠氮化策略,产生β-叠氮醇和β-叠氮过氧化物的混合物,必须依靠膦试剂来提高化学选择性。为了克服上述问题,我们提出了一种通过 O 2中锰介导的配体到金属电荷转移 (LMCT) 进行烯烃的光化学羟基叠氮反应,将 N 3 –活化为•N 3并结合 O 2用作氧来源为羟基叠氮化产物。还证明了羟基叠氮化转化的广泛烯烃范围和步骤经济化学。