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148717-49-1

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148717-49-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 148717-49-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,7,1 and 7 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 148717-49:
(8*1)+(7*4)+(6*8)+(5*7)+(4*1)+(3*7)+(2*4)+(1*9)=161
161 % 10 = 1
So 148717-49-1 is a valid CAS Registry Number.

148717-49-1Downstream Products

148717-49-1Relevant articles and documents

Synthesis of NPS R-568 utilizing titanium-catalyzed asymmetric hydrosilylation

Hansen, Marcus C.,Buchwald, Stephen L.

, p. 2033 - 2034 (1999)

The enantioselective hydrosilylation of imines catalyzed by an (EBTHI) Ti (EBTHI=ethylene-bis(η5-tetrahydroindenyl) species was applied to the synthesis of NPS R-568, an active compound for the treatment of hyperparathyroidism.

Continuous-Flow Amide and Ester Reductions Using Neat Borane Dimethylsulfide Complex

?tv?s, Sándor B.,Kappe, C. Oliver

, p. 1800 - 1807 (2020/02/27)

Reductions of amides and esters are of critical importance in synthetic chemistry, and there are numerous protocols for executing these transformations employing traditional batch conditions. Notably, strategies based on flow chemistry, especially for amide reductions, are much less explored. Herein, a simple process was developed in which neat borane dimethylsulfide complex (BH3?DMS) was used to reduce various esters and amides under continuous-flow conditions. Taking advantage of the solvent-free nature of the commercially available borane reagent, high substrate concentrations were realized, allowing outstanding productivity and a significant reduction in E-factors. In addition, with carefully optimized short residence times, the corresponding alcohols and amines were obtained in high selectivity and high yields. The synthetic utility of the inexpensive and easily implemented flow protocol was further corroborated by multigram-scale syntheses of pharmaceutically relevant products. Owing to its beneficial features, including low solvent and reducing agent consumption, high selectivity, simplicity, and inherent scalability, the present process demonstrates fewer environmental concerns than most typical batch reductions using metal hydrides as reducing agents.

Sulfinamide Phosphinates as Chiral Catalysts for the Enantioselective Organocatalytic Reduction of Imines

Chelouan, Ahmed,Recio, Rocío,Borrego, Lorenzo G.,álvarez, Eleuterio,Khiar, Noureddine,Fernández, Inmaculada

, p. 3258 - 3261 (2016/07/14)

A new type of chiral sulfinamide phosphinate catalysts with up to three stereogenic centers, readily accessible from commercially available starting materials, is reported. The naphthyl derivative SulPhos proved to be highly efficient in the organocatalyt

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