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293732-19-1

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293732-19-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 293732-19-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,9,3,7,3 and 2 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 293732-19:
(8*2)+(7*9)+(6*3)+(5*7)+(4*3)+(3*2)+(2*1)+(1*9)=161
161 % 10 = 1
So 293732-19-1 is a valid CAS Registry Number.

293732-19-1Relevant articles and documents

Enantioselective Palladium-Catalyzed Heck-Heck Cascade Reactions: Ready Access to the Tetracyclic Core of Lycorane Alkaloids

Coya, Estibaliz,Sotomayor, Nuria,Lete, Esther

supporting information, p. 3206 - 3214 (2015/11/03)

A rapid and efficient access to a wide variety of enantiomerically enriched C-11b substituted lycorane analogues can be achieved via a catalytic asymmetric Heck-Heck 6-exo/6-endo cascade reaction in the presence of (R)-BINAP.

An efficient entry to pyrrolo[1,2-b]isoquinolines and related systems through Parham cyclisation

Ruiz, Javier,Ardeo, Ainhoa,Ignacio, Roberto,Sotomayor, Nuria,Lete, Esther

, p. 3311 - 3324 (2007/10/03)

Aryllithiums generated by lithium-iodine exchange undergo intramolecular cyclisation to give pyrrolo[1,2-b]isoquinolines, in high yields. The best results were obtained when Weinreb or morpholine amides were used as internal electrophiles. The procedure h

Parham-type cycliacylation with Weinreb amides. Application to the synthesis of fused indolizinone systems

Ruiz, Javier,Sotomayor, Nuria,Lete, Esther

, p. 1115 - 1117 (2007/10/03)

(Matrix presented) Weinreb amides behave as efficient internal electrophiles in Parham-type cycliacylation reactions. Thus, aryl- and heteroaryllithiums generated by lithium-halogen exchange undergo intramolecular cyclization to give fused indolizinone systems as pyrrolo[1,2-b]isoquinolines, thieno[2,3-f]indolizinones, and pyrrolo[1,2-b]acridinones in high yields.

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