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91861-49-3

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91861-49-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91861-49-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,8,6 and 1 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 91861-49:
(7*9)+(6*1)+(5*8)+(4*6)+(3*1)+(2*4)+(1*9)=153
153 % 10 = 3
So 91861-49-3 is a valid CAS Registry Number.

91861-49-3Relevant articles and documents

Copper(I)-Catalyzed Allylic Substitutions with a Hydride Nucleophile

Nguyen, T. N. Thanh,Thiel, Niklas O.,Pape, Felix,Teichert, Johannes F.

, p. 2455 - 2458 (2016)

An easily accessible copper(I)/N-heterocyclic carbene (NHC) complex enables a regioselective hydride transfer to allylic bromides, an allylic reduction. The resulting aryl- and alkyl-substituted branched α-olefins, which are valuable building blocks for synthesis, are obtained in good yields and regioselectivity. A commercially available silane, (TMSO)2Si(Me)H, is employed as hydride source. This protocol offers a unified alternative to the established metal-catalyzed allylic substitutions with carbon nucleophiles, as no adaption of the catalyst to the nature of the nucleophile is required.

The synthesis of an aziridinyl analogue of unit A of cryptophycin-1

Mezrai,Drici,Lesur,Kajima Mulengi,Wadouachi,Pilard

, p. 259 - 267 (2014/05/20)

A novel analogue of unit A of cryptophycin-1 was prepared starting from commercial trans-cinnamaldehyde. The modifications introduced into the new structure related to the replacement of the epoxide with an aziridine moiety, and the inclusion of the 1,3-enone moiety into an aromatic ester frame through the synthesis of a key aromatic ketone. Asymmetry was induced during the later steps of the synthetic pathway. The optical purity of compounds was monitored by chiral HPLC and polarimetric measurements.

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