Recyclable Poly‐Zn 3 (OAc) 4 –3,3′‐Bis(aminoimino)binaphthoxide Catalyst for Asymmetric Iodolactonization

On the basis of the structure of the unimolecular Zn 3 (OAc) 4 –3,3′‐bis(aminoimino)binaphthoxide complex, a poly‐Zn 3 (OAc) 4 –3,3′‐bis(aminoimino)binaphthoxide (poly‐ Zn ) complex was prepared from 3,3′‐diformylbinaphthol, tetramine, and Zn(OAc) 2 . The first‐generation poly‐ Zn catalyst (poly‐ Zn...

Full description

Saved in:
Bibliographic Details
Published in:ChemCatChem 2015-10, Vol.7 (20), p.3234-3238
Main Authors: Arai, Takayoshi, Kojima, Takahiro, Watanabe, Ohji, Itoh, Tsutomu, Kanoh, Hirofumi
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:On the basis of the structure of the unimolecular Zn 3 (OAc) 4 –3,3′‐bis(aminoimino)binaphthoxide complex, a poly‐Zn 3 (OAc) 4 –3,3′‐bis(aminoimino)binaphthoxide (poly‐ Zn ) complex was prepared from 3,3′‐diformylbinaphthol, tetramine, and Zn(OAc) 2 . The first‐generation poly‐ Zn catalyst (poly‐ Zn1 ) was prepared from poly(aminoiminobinaphthol) and Zn(OAc) 2 . Although poly‐ Zn1 showed high catalytic activity for iodolactonization, the catalyst could not be reused. The second‐generation poly‐Zn catalyst (poly‐ Zn2 ) was prepared by the self‐organization of 3,3′‐diformylbinaphthol, tetramine, and Zn(OAc) 2 . This produced a stable and active poly‐ Zn2 catalyst for asymmetric iodolactonization that was reused over five cycles.
ISSN:1867-3880
1867-3899
DOI:10.1002/cctc.201500842