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91348-52-6

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91348-52-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91348-52-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,3,4 and 8 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91348-52:
(7*9)+(6*1)+(5*3)+(4*4)+(3*8)+(2*5)+(1*2)=136
136 % 10 = 6
So 91348-52-6 is a valid CAS Registry Number.

91348-52-6Relevant articles and documents

Preparation of α-bromoacrylates: One-pot procedure for the synthesis of conjugated acetylenic carboxylates from aldehydes with Ph3P/ Br3CCO2Et

Kim, Joong-Gon,Dong, Ho Kang,Doo, Ok Jang

, p. 443 - 447 (2008)

We have established the optimal conditions for the Wittig reaction for synthesizing α-bromoacrylates with a high selectivity, and developed a simple and efficient one-pot procedure for preparing various conjugated acetylenic carboxylates in moderate to high yields. Georg Thieme Verlag Stuttgart.

Site-specific preparation of 2-carboalkoxy-4-substituted naphthalenes and 9-alkylphenanthrenes and evidence for an allene intermediate in the novel base-catalyzed cyclization of 2-alkynylbiphenyls

Wang, Yi,Burton, Donald J.

, p. 5295 - 5298 (2007/10/03)

A site-specific preparation of 2-carboalkoxy-4-substituted naphthalenes and 9-alkylphenanthrenes is described. The successful cyclization of an allene intermediate provides supportive evidence for the previously proposed mechanism.

Microwave-assisted tandem nucleophilic substitution-Wittig reaction of α-hypervalent iodine functionalized phosphonium ylide

Yu, Xiaochun,Huang, Xian

, p. 1895 - 1897 (2007/10/03)

Under microwave irradiation conditions the tandem nucleophilic substitution-Wittig reaction of α-hypervalent iodine functionalized phosphonium ylide can occur readily to afford α-heteroatom substituted-α,β-unsaturated enoates in good yields stereo-selecti

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