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1228187-65-2

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1228187-65-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1228187-65-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,1,8 and 7 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1228187-65:
(9*1)+(8*2)+(7*2)+(6*8)+(5*1)+(4*8)+(3*7)+(2*6)+(1*5)=162
162 % 10 = 2
So 1228187-65-2 is a valid CAS Registry Number.

1228187-65-2Upstream product

1228187-65-2Downstream Products

1228187-65-2Relevant academic research and scientific papers

BF3-promoted synthesis of spiroindenyl heterocycles

Chang, Meng-Yang,Lin, Chung-Han,Chen, Yeh-Long,Hsu, Ru-Ting,Chang, Ching-Yao

, p. 3154 - 3158 (2010)

An easy and straightforward synthesis of spiroindenyl heterocycles by the repeated treatment of boron trifluoride etherate (BF3-OEt2) is reported. The overall transformation from ketones 1 to spiro-fused indenes 3 proceeds via Wittig olefination, deconjugation, Grignard addition, and intramolecular electrophilic cyclization in moderate yields. It presents a novel rearrangement reaction catalyzed by boron trifluoride etherate and broadens the scope of application.

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