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948859-48-1

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948859-48-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 948859-48-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,8,8,5 and 9 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 948859-48:
(8*9)+(7*4)+(6*8)+(5*8)+(4*5)+(3*9)+(2*4)+(1*8)=251
251 % 10 = 1
So 948859-48-1 is a valid CAS Registry Number.

948859-48-1Relevant articles and documents

Convenient synthesis of allenylphosphoryl compounds: Via Cu-catalysed couplings of P(O)H compounds with propargyl acetates

Shen, Ruwei,Luo, Bing,Yang, Jianlin,Zhang, Lixiong,Han, Li-Biao

supporting information, p. 6451 - 6454 (2016/05/24)

A novel Cu-catalysed substitution reaction of propargyl acetates with P(O)H compounds is developed to afford allenylphosphoryl compounds via C-P bond coupling in high yields under mild conditions. A plausible mechanism involving the nucleophilic interception of the Cu-allenylidene intermediates is proposed.

Gold-catalyzed regioselective hydration of propargyl acetates assisted by a neighboring carbonyl group: Access to α-acyloxy methyl ketones and synthesis of (±)-actinopolymorphol B

Ghosh, Nayan,Nayak, Sanatan,Sahoo, Akhila K.

, p. 500 - 511 (2011/04/17)

A general atom-economical approach for the synthesis of α-acyloxy methyl ketone is demonstrated through regioselective hydration of a wide range of propargyl acetates. Readily available catalyst comprising of 1% Ph 3PAuCl and 1% AgSbF6 in dioxane-H2O efficiently hydrolyzes the terminal alkynes of the propargyl acetate in the absence of acid promoters at ambient temperature within a short time. Effective regioselective hydration is facilitated by the neighboring carbonyl group as demonstrated through 18O-labeling study. Compatibility of functional moieties and tolerance to various acid-labile protecting groups are observed. The catalytic condition is also suitable to perform hydration of TMS-substituted propargyl acetates, even though it requires prolonged reaction time for completion. Stereointegrity of the propargylic acetate is preserved during the hydration. The robustness of the system is successfully demonstrated through gram scale preparation of the product in nearly quantitative yield. The common α-acyloxy methyl ketone is transformed to 1,2-diol and 1,2-amino alcohol derivatives. Synthesis of actinopolymorphol B is achieved for the first time involving hydration of the propargyl acetate as the key step.

A versatile route to C-6 arylmethyl-functionalized S-DABO and related analogues

Radi, Marco,Contemori, Lorenzo,Castagnolo, Daniele,Spinosa, Raffaella,Este, Jose A.,Massa, Silvio,Botta, Maurizio

, p. 3157 - 3160 (2008/02/10)

Since their discovery in 1992,3,4-dihydro-2-alkoxy-6-benzyl-4- oxypyrimidines (DABOs) have been subjected to many structural modifications in order to obtain better non-nucleoside reverse transcriptase inhibitors (NNRTIs) for the treatment of AIDS. Herein

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