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4416-71-1

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4416-71-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4416-71-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,1 and 6 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4416-71:
(6*4)+(5*4)+(4*1)+(3*6)+(2*7)+(1*1)=81
81 % 10 = 1
So 4416-71-1 is a valid CAS Registry Number.
InChI:InChI=1/C10H10N2O/c1-7-9(10(11)13-12-7)8-5-3-2-4-6-8/h2-6H,11H2,1H3

4416-71-1Relevant articles and documents

Enantioselective dearomative [3+2] annulation of 5-amino-isoxazoles with quinone monoimines

Liu, Hui,Yan, Yingkun,Zhang, Jiayan,Liu, Min,Cheng, Shaobing,Wang, Zhouyu,Zhang, Xiaomei

supporting information, p. 13591 - 13594 (2020/11/17)

The first enantioselective dearomative [3+2] annulation of 5-amino-isoxazoles with quinone monoimines was realized using a chiral phosphoric acid as catalyst. Various novel (bridged) isoxazoline fused dihydrobenzofurans bearing two continuous quaternary stereocenters were achieved in moderate to good yields (up to 94%) with moderate to good enantioselectivities (up to 98% ee). The absolute configurations of two products were assigned by X-ray crystal structural analyses and a plausible reaction mechanism was proposed. This journal is

Efficient regioselective synthesis of 4- and 5-substituted isoxazoles under thermal and microwave conditions

Lasri, Jamal,Mukhopadhyay, Suman,Charmier, M. Adilia Januario

experimental part, p. 1385 - 1389 (2009/04/10)

(Chemical Equation Presented) The [2+3] cycloaddition reaction between nitrile oxides 2 and the captodative olefins 1 or the methyl crotonate derivatives 4 is regioselective and leads to the formation of the 5-substituted amino-isoxazole 3 or the 4-substi

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