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160878-39-7

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160878-39-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 160878-39-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,0,8,7 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 160878-39:
(8*1)+(7*6)+(6*0)+(5*8)+(4*7)+(3*8)+(2*3)+(1*9)=157
157 % 10 = 7
So 160878-39-7 is a valid CAS Registry Number.

160878-39-7Relevant articles and documents

Lewis Acid-Promoted Reactions of 3-Methoxy-N-(benzenesulfonyl)-1,4-benzoquinone Monoimine with Propenylbenzenes

Engler, Thomas A.,Scheibe, Cynthia M.

, p. 6247 - 6253 (2007/10/03)

BF3·OEt2-promoted reactions of 4-N-(benzenesulfonyl)-3-methoxy-1,4-benzoquinone monoimine (5) with (E)-propenylbenzenes bearing strong electron-donating groups on their aromaric rings produce 2-aryl-6-methoxy-3-methyl-5-[N-(benzenesulfonyl)amino]-2,3-diydrobenzofurans (6). With neutral propenylbenzenes, either the dihydrobenzofurans, bicyclo[3.2.1]octenediones 17, or products of tandem cycloaddition (7-9) are formed depending upon reaction conditions. In the latter, molecules with seven to eight asymmetric centers are formed in a single reaction from achiral starting materials. Thus, these seemingly simple reactions yield products of remarkable complexity, and with a high degree of stereoselectivity.

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