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diethyl P-(3-chlorobenzoyl)phosphonate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

19957-20-1

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19957-20-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19957-20-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,5 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19957-20:
(7*1)+(6*9)+(5*9)+(4*5)+(3*7)+(2*2)+(1*0)=151
151 % 10 = 1
So 19957-20-1 is a valid CAS Registry Number.

19957-20-1Relevant academic research and scientific papers

Nicotinium dichromate (= 3-carboxypyridinium dichromate; NDC) as an efficient reagent for the oxidative deamination of amines and aminophosphonates

Sobhani, Sara,Aryanejad, Sima,Maleki, Mahdi Faal

experimental part, p. 613 - 617 (2012/05/20)

A new method for the efficient synthesis of aldehydes, ketones, and oxophosphonates from various types of amines (primary and secondary) and aminophosphonates via oxidative deamination by nicotinium dichromate (= 3-carboxypyridinium dichromate; NDC) is described.

Oxidative deamination of α-aminophosphonates and amines by zinc dichromate trihydrate (ZnCr2O73H2O) under solvent-free conditions at room temperature

Sobhani, Sara,Maleki, Mahdi Faal

experimental part, p. 383 - 386 (2010/04/05)

A novel method for the rapid and efficient conversion of a variety of -aminophosphonates to α-ketophosphonates using ZnCr2O 73H2O via oxidative deamination under solvent-free conditions at room temperature is described. This method is also applicable to the rapid and highly selective oxidation of various types of ordinary amines (primary and secondary) to aldehydes and ketones in good to high yields. Georg Thieme Verlag Stuttgart New York.

Preparation of α-ketophosphonates by oxidation of α-hydroxyphosphonates with chromium-based oxidants

Firouzabadi, Habib,Iranpoor, Nasser,Sobhani, Sara

, p. 1463 - 1471 (2007/10/03)

Various types of diethyl α-hydroxyphosphonates were efficiently converted to diethyl α-ketophosphonates by nicotinium dichromate (NDC), nicotinium chlorochromate (NCC), and isonicotinium dichromate (INDC) in high yields.

Preparation of α-ketophosphonates by oxidation of α-hydroxyphosphonates with Pyridinium Chlorochromate (PCC)

Firouzabadi, Habib,Iranpoor, Nasser,Sobhani, Sara

, p. 1483 - 1491 (2007/10/03)

Various types of diethyl α-hydroxyphosphonates were converted efficiently to their corresponding diethyl α-ketophosphonates by pyridiinum chlorochromate (PCC) without cleavage of C(O) - P bond in the absence of solvent or in solution in high yields.

Preparation of α-ketophosphonates by oxidation of α-hydroxyphosphonates with neutral alumina supported potassium permanganate (NASPP) under solvent-free conditions and potassium permanganate in dry benzene

Firouzabadi, Habib,Iranpoor, Nasser,Sobhani, Sara

, p. 477 - 480 (2007/10/03)

Various types of α-hydroxyphosphonates were converted to α-ketophosphonates in high yields by potassium permanganate in dry benzene or by neutral alumina supported potassium permanganate (NASPP) under solvent-free conditions.

High yield preparation of α-ketophosphonates by oxidation of α-hydroxyphosphonates with zinc dichromate trihydrate (ZnCr2O7·3H2O) under solvent-free conditions

Firouzabadi, Habib,Iranpoor, Nasser,Sobhani, Sara,Sardarian, Ali-Reza

, p. 4369 - 4371 (2007/10/03)

Various types of α-hydroxyphosphonates were converted to α-ketophosphonates by zinc dichromate trihydrate in high yields and rates under solvent-free conditions.

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