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76144-87-1

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76144-87-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 76144-87-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,6,1,4 and 4 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 76144-87:
(7*7)+(6*6)+(5*1)+(4*4)+(3*4)+(2*8)+(1*7)=141
141 % 10 = 1
So 76144-87-1 is a valid CAS Registry Number.

76144-87-1Relevant articles and documents

One-pot synthesis of binaphthyl-based phosphines via direct modification of BINAP

Ye, Jing-Jing,Zhang, Jian-Qiu,Shimada, Shigeru,Han, Li-Biao

supporting information, (2021/11/18)

Herein reported is the convenient and efficient strategy for the preparation of binaphthyl-based phosphines through direct modification to the commercially available 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (BINAP) with sodium. In the absence of 15-crown-5-ether, a cyclic sodium dinapthylphospholide intermediate is mainly generated. With 15-crown-5-ether, P-Ph bonds are selectively cleft by Na to produce binaphthyl-based disodium phosphides. The mechanism of selective formation of sodium dinapthylphospholide or binaphthyl-based disodium phosphides is proposed.

Synthesis method of 2, 2 '-bisdiphenylphosphino-1, 1'-binaphthalene

-

, (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.

Metal-Free Reduction of Phosphine Oxides, Sulfoxides, and N-Oxides with Hydrosilanes using a Borinic Acid Precatalyst

Chardon, Aurélien,Maubert, Orianne,Rouden, Jacques,Blanchet, Jér?me

, p. 4460 - 4464 (2017/11/22)

The general reduction of phosphine oxides, sulfoxides, and amine N-oxides was achieved by combining bis(2-chlorophenyl)borinic acid with phenylsilane. The reaction was shown to tolerate a wide range of substrates and could be performed under mild conditions, with only 2.5 mol % of the easily synthesized catalyst. Mechanistic investigations pointed to a key borohydride as the real catalyst and at bis(2-chlorophenyl)borinic acid as a precatalyst.

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