The author of 《Dramatic enantioselectivity reversal in the propargylation of aldehyde with alkynyllithium catalyzed by dilithium binaphtholate derivatives》 were Nakajima, Makoto; Watanabe, Rika; Osakama, Kazuki; Sakamoto, Midori; Takemoto, Daijiro; Kukita, Kenji. And the article was published in Heterocycles in 2018. Quality Control of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene The author mentioned the following in the article:
A slight structural modification of a chiral catalyst (R)-I (R = C6H5, 2-CH3OC6H4, 2,3-dihydro-1-benzofuran-7-yl, etc.) caused a dramatic enantioselectivity reversal in the propargylation of aldehydes R1CHO (R1 = C6H5, (CH2)2C6H5, 2-naphthyl, etc.) with alkynyllithium. The experimental process involved the reaction of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3Quality Control of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene)
(R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene(cas: 189518-78-3) belongs to organic iodides. Generally organic iodides can be divided into two classes of alkyl iodides and aryl iodides. Quality Control of (R)-3,3′-Diiodo-2,2′-bis(methoxymethoxy)-1,1′-binaphthalene Typical reactions of alkyl iodides include nucleophilic substitution, elimination, reduction, and the formation of organometallics.
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com