4488-22-6Relevant articles and documents
Synthesis method of 2, 2 '-bisdiphenylphosphino-1, 1'-binaphthalene
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Paragraph 0027-0029, (2020/09/12)
The invention relates to a synthesis method of 2, 2 '-bisdiphenylphosphino-1, 1'-binaphthalene, which is realized by the following steps: step 1, carrying out BUCHERER reaction on 1, 1 '-binaphthyl-2-naphthol to generate 1, 1'-binaphthyl-2, 2 '-diamine; 2, subjecting 1, 1 '-binaphthyl-2, 2'-diamine to a Sandmeyer reaction to generate binaphthyl dibromide; and 3, carrying out a Grignard reaction onthe binaphthyl dibromide and diphenyl phosphine chloride to generate 2, 2 '-bisdiphenylphosphino-1, 1'-binaphthalene (BINAP). Bulk chemical raw materials are used and are low in price and easy to obtain, and the production cost is effectively reduced; the method has the advantages of easily available raw materials, high reaction yield, simple post-treatment, facilitation of industrial amplification, and strong industrial application prospect.
Oxidative skeletal rearrangement of 1,1′-binaphthalene-2,2′- diamines (BINAMs) via C-C bond cleavage and nitrogen migration: A versatile synthesis of U-shaped azaacenes
Takeda, Youhei,Okazaki, Masato,Minakata, Satoshi
supporting information, p. 10291 - 10294 (2014/08/18)
An oxidative skeletal rearrangement of 1,1′-binaphthalene-2,2′- diamines (BINAMs) that involves the cleavage of a strong C-C single bond of the binaphthalene unit and the nitrogen migration has been discovered. The unprecedented rearrangement enables access to a series of U-shaped azaacenes otherwise difficult to prepare in a selective manner by classical methods. Moreover, physicochemical properties of the unique azaacenes have been comprehensively investigated. This journal is the Partner Organisations 2014.
CuCl2 and FeCl3 as a new and efficient catalyst for the oxidative coupling of aryl amines into 1,1′-binaphthalene-2,2 /-diamines in the ionic liquid media
Montazeri, Naser,Tavana, Mahdie,Yousefian, Soghra,Firooz, Farzane Taj
scheme or table, p. 840 - 842 (2012/07/31)
A practical synthesis of 1,1′-binaphthalene-1,1′-diamines (BINAM) from a-naphthylamine is described here. The facile purification procedure of the method makes it amenable to gram scale synthesis of 1,1′-binaphthalene-1,1′-diamines with fairly high optical purity and yield of product.