different formaldoximes, can efficiently undergo this transformation. The method features visible light-induced generation of nucleophilic hybrid alkyl Pd radical intermediates, which upon radical addition at the imine moiety and a subsequent β-hydrogen elimination deliver substituted imines.
Photo-induced Substitutive Introduction of the Aldoxime Functional Group to Carbon Chains: A Formal Formylation of Non-Acidic C(sp<sup>3</sup>
)−H Bonds
bond cleaving agent and arylsulfonyl oxime as an aldoxime precursor. The non‐acidic C−H bonds in various substances, including cycloalkanes, ethers, azacycles, and cyclic sulfides, were chemoselectively converted at ambient temperature under neutral conditions. The present transformation is a formal formylation of non‐acidic C(sp3)−H bonds in a single step.
Sustainable Synthesis of Oximes, Hydrazones, and Thiosemicarbazones under Mild Organocatalyzed Reaction Conditions
作者:Sara Morales、José Luis Aceña、José Luis García Ruano、M. Belén Cid
DOI:10.1021/acs.joc.6b01912
日期:2016.10.21
thiosemicarbazones derived from aromatic and aliphaticaldehydes using equimolar amounts of reagents and green solvents. Experimental simplicity and excellent yields after a simple filtration are the main advantages of the method, being an alternative to those currently available especially for the acyl derivatives, which do not work under uncatalyzed conditions. Its application to the synthesis of acyloximes by