36504-04-8Relevant academic research and scientific papers
Directed C–H Alkenylation of Aryl Imines with Alkenyl Phosphates Promoted by a Cobalt–N-Heterocyclic Carbene Catalyst
Lee, Pin-Sheng,Xu, Wengang,Yoshikai, Naohiko
, p. 4340 - 4347 (2017)
We report herein an ortho-C–H alkenylation reaction of aryl imines with alkenyl phosphates promoted by a cobalt–N-heterocyclic carbene (NHC) catalytic system. While commercially available bulky NHC ligands exhibited only modest catalytic activity, elaboration of the nitrogen substituents and backbone of the NHC enabled the desired transformation to proceed in high yield at a mild temperature. The new Co–NHC system proved applicable to a variety of aryl imines and alkenyl phosphates to afford ortho-alkenylated aryl imines, which serve as precursors to benzofulvene derivatives. (Figure presented.).
Synthesis of β-Keto Phosphonates from Vinyl Phosphates via a 1,3-Phosphorus Migration
Calogeropoulou, Theodora,Hammond, Gerald B.,Wiemer, David F.
, p. 4185 - 4190 (2007/10/02)
A new method for the preparation of β-keto phosphonates has been developed, involving rearrangement of vinyl phosphates upon treatment with strong base.Because this approach ultimately relies upon electrophilic dialkyl phosphorochloridates as the phosphor
