Niki, Aya published the artcileConstruction of acyclic all-carbon quaternary stereocenter based on asymmetric Michael addition of chiral amine, Name: Pyridine Iodochloride complex, the publication is Chemical & Pharmaceutical Bulletin (2021), 69(9), 926-930, database is CAplus.
Acyclic asym. quaternary stereocenters, which are composed of four carbon-carbon bonds, were finely constructed by utilizing a face-selective alkylation of enolate intermediates derived from an asym. Michael addition reaction of a chiral lithium amide with trisubstituted (E)-α,β-unsaturated esters. The present face-selective alkylation was able to employ diverse alkyl halides as an electrophile to afford various Michael adducts having an all-carbon quaternary stereocenter. With regard to the deprotection of the chiral auxiliary, N-iodosuccinimide used in our previous study did not work in the present cases; however, the pyridine iodine monochloride in the presence of H2O was found effective to remove the bornyl group and the benzyl group on the amino group to provide the β-amino ester derivative
Chemical & Pharmaceutical Bulletin published new progress about 6443-90-9. 6443-90-9 belongs to iodides-buliding-blocks, auxiliary class Pyridines, name is Pyridine Iodochloride complex, and the molecular formula is C5H5ClIN, Name: Pyridine Iodochloride complex.
Referemce:
https://en.wikipedia.org/wiki/Iodide,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com