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211758-35-9

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211758-35-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 211758-35-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,1,7,5 and 8 respectively; the second part has 2 digits, 3 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 211758-35:
(8*2)+(7*1)+(6*1)+(5*7)+(4*5)+(3*8)+(2*3)+(1*5)=119
119 % 10 = 9
So 211758-35-9 is a valid CAS Registry Number.

211758-35-9Relevant articles and documents

Highly diastereoselective Diels-Alder reactions of acrylic esters incorporated into a variety of hexopyranosides

Nagatsuka, Takayuki,Yamaguchi, Shuhei,Totani, Kiichiro,Takao, Ken-ichi,Tadano, Kin-ichi

, p. 519 - 535 (2007/10/03)

The Diels-Alder reactions of a variety of hexopyranosides carrying an acrylic ester with cyclopentadiene were examined. Some acrylic esters provided the cycloaddition products carrying a norbornene carboxylate with a high level of diastereoselectivity. Plausible mechanisms are presented for the cases of a 4-O-acryloyl-6-deoxy-α-D-glucopyranosidic and 2-O-acryloyl-α-D-glucopyranosidic substrates. By reductive removal of the carbohydrate templates from the adducts, either 2S or 2R-enriched 5-norbornene-2-methanol were obtained.

Asymmetric Diels-Alder reactions of 2-fluoroacrylic acid derivatives. Part 2: A remarkable effect of fluorine substituent on the diastereoselectivity

Ito, Hisanaka,Saito, Akio,Taguchi, Takeo

, p. 1989 - 1994 (2007/10/03)

An efficient construction of a chiral monofluorinated tertiary carbon was achieved by a highly exo- and diastereofacial selective Diels-Alder reaction of a 2-fluoroacrylic acid derivative derived from 8-phenylmenthol, and cyclopentadiene. The substituent effect of the fluorine on the selectivities is remarkable as compared with the other substituents at the α-position of the acrylate.

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