1370729-65-9Relevant academic research and scientific papers
The role of ni-carboxylate during catalytic asymmetric iodolactonization using pybidine-ni(OAc)
Arai, Takayoshi,Kajikawa, Satoshi,Matsumura, Eri
, p. 2045 - 2048 (2013)
The combination of a PyBidine-Ni(OAc)2 complex with a catalytic amount of iodine efficiently catalyzed asymmetric iodolactonization to generate chiral iodolactones with up to 89% enantiomeric excess. The formation of an intermediate Ni-carboxylate species from the alkenyl carboxylic acid is a key role in promoting the iodolactonization. Georg Thieme Verlag Stuttgart, New York.
Recyclable Poly-Zn3(OAc)4-3,3′-Bis(aminoimino)binaphthoxide Catalyst for Asymmetric Iodolactonization
Arai, Takayoshi,Kojima, Takahiro,Watanabe, Ohji,Itoh, Tsutomu,Kanoh, Hirofumi
, p. 3234 - 3238 (2015/10/28)
On the basis of the structure of the unimolecular Zn3(OAc)4-3,3′-bis(aminoimino)binaphthoxide complex, a poly-Zn3(OAc)4-3,3′-bis(aminoimino)binaphthoxide (poly-Zn) complex was prepared from 3,3′-diformylbinaphth
A trinuclear Zn3(OAc)4-3,3′-bis(aminoimino) binaphthoxide complex for highly efficient catalytic asymmetric iodolactonization
Arai, Takayoshi,Sugiyama, Noriyuki,Masu, Hyuma,Kado, Sayaka,Yabe, Shinnosuke,Yamanaka, Masahiro
supporting information, p. 8287 - 8290 (2014/07/22)
A 3,3′-bis(aminoimino)BINOL ligand was newly designed and synthesized for the formation of a trinuclear Zn complex upon reaction with Zn(OAc) 2. Using the harmony of the tri-zinc atoms, 1 mol% Zn 3(OAc)4-3,3′-bis(aminoimin
Achiral counterion control of enantioselectivity in a Bronsted acid-catalyzed lactonization
Dobish, Mark C.,Johnston, Jeffrey N.
supporting information; experimental part, p. 6068 - 6071 (2012/05/07)
Highly enantioselective halolactonizations have been developed that employ a chiral proton catalyst-N-iodosuccinimide (NIS) reagent system in which the Bronsted acid is used at catalyst loadings as low as 1 mol %. An approach that modulates the achiral counterion (equimolar to the neutral chiral ligand-proton complex present at low catalyst loadings) to optimize the enantioselection is documented for the first time in this transformation. In this way, unsaturated carboxylic acids are converted to γ-lactones in high yields (up to 98% ee) using commercially available NIS.
