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1241783-23-2

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1241783-23-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1241783-23-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,1,7,8 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1241783-23:
(9*1)+(8*2)+(7*4)+(6*1)+(5*7)+(4*8)+(3*3)+(2*2)+(1*3)=142
142 % 10 = 2
So 1241783-23-2 is a valid CAS Registry Number.

1241783-23-2Downstream Products

1241783-23-2Relevant academic research and scientific papers

Controlled rearrangement of lactam-tethered allenols with brominating reagents: A combined experimental and theoretical study on α-versus β-keto lactam formation

Alcaide, Benito,Almendros, Pedro,Luna, Amparo,Cembellin, Sara,Arno, Manuel,Domingo, Luis R.

experimental part, p. 11559 - 11566 (2011/11/29)

N-Bromosuccinimide (NBS) smoothly promotes the ring expansion of lactam-tethered allenols to efficiently afford cyclic α- or β-ketoamides with good yields and high chemo-, regio-, and diastereoselectivity, through controlled C-C bond cleavage of the β- or

Divergent reactivity of 2-azetidinone-tethered allenols with electrophilic reagents: Controlled ring expansion versus spirocyclization

Alcaide, Benito,Almendros, Pedro,Luna, Amparo,Torres, M. Rosario

supporting information; experimental part, p. 621 - 626 (2010/07/06)

A dual reactivity of 2-azetidinone-tethered allenols may occur by judicious choice of the electrophilic reagents, namely halogenating versus selenating reagents. Using common substrates, structurally different compounds, namely tetramic acids (from N-bromosuccinimide) or spirocyclic seleno-ss-lactams (from N-phenylselenophthalimide), can be readily synthesized by these divergent protocols.

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