Highly efficient hydrazination of conjugated nitroalkenes via imidazole or DMAP mediated Morita–Baylis–Hillman reaction
作者:Mamta Dadwal、Shaikh M. Mobin、Irishi N. N. Namboothiri
DOI:10.1039/b604899d
日期:——
Novel alpha-hydrazino-alpha,beta-unsaturated nitroalkenes, which exhibit dynamic phenomenon on the NMR time scale, were synthesized in excellent yields via imidazole or DMAP mediated Morita-Baylis-Hillman (MBH) type reaction of nitroalkenes with azodicarboxylates.
Synthesis of hydrazinoheterocycles from Morita–Baylis–Hillman adducts of nitroalkenes with azodicarboxylates
作者:Vaijinath Mane、Jyoti Pandey、Narasihmam Ayyagari、Chandan Dey、Raju Kale、Irishi N. N. Namboothiri
DOI:10.1039/c5ob02656c
日期:——
Conjugatednitroalkenes and nitrodienes undergo smooth α-hydrazination with azodicarboxylates through an imidazole catalyzed carbon–heteroatom bond formation under Morita–Baylis–Hillman conditions. The resulting hydrazinonitroalkenes take part in 1,3-dipolar cycloaddition with azide under mild conditions to give hydrazinotriazoles. A [3 + 2] annulation with phenols and naphthols involving Michael addition