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937255-29-3

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937255-29-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 937255-29-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,3,7,2,5 and 5 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 937255-29:
(8*9)+(7*3)+(6*7)+(5*2)+(4*5)+(3*5)+(2*2)+(1*9)=193
193 % 10 = 3
So 937255-29-3 is a valid CAS Registry Number.

937255-29-3Downstream Products

937255-29-3Relevant articles and documents

Tandem Wittig-intramolecular Diels-Alder cycloaddition of ester-tethered 1,3,9-decatrienes under microwave heating

Wu, Jinlong,Jiang, Xiuqing,Xu, Jingjing,Dai, Wei-Min

experimental part, p. 179 - 192 (2011/02/28)

Intramolecular Diels-Alder (IMDA) cycloaddition of the ester-tethered 1,3,9,-decatrienes possessing a carbonyl substituent at C10 has been investigated under controlled microwave heating (MeCN, 180 °C) to afford a variety of 3,4,4a,7,8,8a-hexahydroisochromen-1-ones in 53-89% yields and in 64:36-79:21 ratios for the cis and trans isomers. Under the same microwave heating conditions, a tandem Wittig-IMDA cycloaddition, starting from the α-bromoacetates of 3,5-hexadien-1-ols and glyoxalate/phenylglyoxal hydrates in the presence of PPh3 and 2,6-lutidine, has been demonstrated, furnishing 3,4,4a,7,8,8a-hexahydroisochromen-1-one adducts in 73-91% yields in favor of the cis isomers. During this tandem process, three consecutive carbon-carbon bonds in the end products were efficiently formed with the aid of microwave irradiation within short reaction times.

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