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501381-03-9

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501381-03-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 501381-03-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,1,3,8 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 501381-03:
(8*5)+(7*0)+(6*1)+(5*3)+(4*8)+(3*1)+(2*0)+(1*3)=99
99 % 10 = 9
So 501381-03-9 is a valid CAS Registry Number.

501381-03-9Relevant articles and documents

l-Menthol-Assisted Synthesis of P-Stereogenic Phosphinous Acid Amides and Phosphine-Boranes

W?odarczyk, Adam,Kozio?, Anna E.,Stankevi?, Marek

, p. 1589 - 1600 (2018/04/20)

Diastereomerically pure phenylphosphonous acid-borane l-menthyl ester N,N-diethylamide was obtained through the fractional crystallization of a diastereomeric mixture of compounds synthesized from PhPCl2, l-menthol, diethylamine, and BH3·THF. Treatment of racemic or diastereomerically pure phenylphosphonous acid-borane derivatives with sodium in liquid ammonia followed by the addition of an electrophile led to the formation of phosphinous acid-amides. Surprisingly, these compounds undergo preferential P–N bond cleavage under Birch reduction conditions.

In situ dearomatisation/alkylation of arylphosphane derivatives

Stankevic, Marek,Wojcik, Karolina,Jaklinska, Magdalena,Pietrusiewicz, K. Michal

, p. 2521 - 2534 (2012/06/01)

The dearomatisation of aryldialkylphosphane-boranes and aryldialkylphosphane oxides under Birch reduction conditions, followed by treatment with reactive alkyl halides, provides the corresponding α-functionalised (cyclohexa-1,4-dien-3-yl)phosphane derivatives. This reaction offers a method of choice for the synthesis of bulky (cyclohexadienyl)phosphanes.

7-Phosphanorbornenium borohydrides: A powerful route to functional secondary phosphine-borane complexes

Tian, Rongqiang,Mathey, Francois

scheme or table, p. 1873 - 1874 (2010/06/14)

The reaction of phosphanorbornenium triflates with sodium borohydride gives the secondary phosphine-borane complexes by reductive cleavage of the two P-C bonds of the bridge. This route is compatible with functionalities such as Cl, CN, CO2Et, and Th.

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