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287970-98-3

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287970-98-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 287970-98-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,7,9,7 and 0 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 287970-98:
(8*2)+(7*8)+(6*7)+(5*9)+(4*7)+(3*0)+(2*9)+(1*8)=213
213 % 10 = 3
So 287970-98-3 is a valid CAS Registry Number.

287970-98-3Downstream Products

287970-98-3Relevant articles and documents

Carbon-Carbon Bond Formation of Trifluoroacetyl Amides with Grignard Reagents via C(O)-CF3 Bond Cleavage

Zhu, Longzhi,Le, Liyuan,Yan, Mingpan,Au, Chak-Tong,Qiu, Renhua,Kambe, Nobuaki

, p. 5635 - 5644 (2019)

The reaction of trifluoroacetyl amides with Grignard reagent for the substitution of CF3 group with various alkyl or aryl groups is described. A variety of aryl, quinolin-8-yl, and (hetero)alkyl functional groups as well as F, Cl, and Br atoms are well tolerated. These moisture-stable and easily available trifluoroacetyl amides can be conveniently obtained and used as new versatile precursors for isocyanates. The control experiments show that the reaction proceeds via an isocyanate intermediate and/or alkoxide/amide dual anionic intermediate.

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