Solid-Phase Tandem Radical Addition-Cyclization Reaction: Triethylborane-Induced Reaction of Oxime Ethers Anchored to Polymer Support
作者:Hideto Miyabe、Hirotaka Tanaka、Takeaki Naito
DOI:10.1248/cpb.52.842
日期:——
Tandemradicaladdition-cyclization of oxime ethers anchored to polymer support was studied. The reaction of oxime ethers with stannyl radical proceeded effectively by the use of triethylborane as a radical initiator. The alkyl radicaladdition-cyclizationreactions of oxime ether connected with alpha,beta-unsaturated carbonyl group proceeded under iodine atom-transfer reaction conditions to give the
addition-cyclization of oxime ethers and hydrazones intramolecularly connected with the alpha,beta-unsaturated carbonyl group is described. The radical reaction of oxime ethers 1, 2, and 4 connected with acryloyl and methacryloyl moieties proceeded smoothly to give the heterocycles via a tandem C-C bond-forming process. The tandem reaction of hydrazone 5 took place in the presence of Zn(OTf)(2) as a Lewis acid to give
Stannyl Radical Addition-Cyclization of Oxime Ethers Connected with Olefins
作者:Hideto Miyabe、Hirotaka Tanaka、Takeaki Naito
DOI:10.1248/cpb.52.74
日期:——
Stannyl radical addition-cyclization of oxime ethers connected with olefin moieties was studied. The radical reactions proceeded effectively by the use of triethylborane as a radical initiator to provide the functionalized pyrrolidines via a carbon–carbon bond-forming process.