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77803-77-1

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77803-77-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 77803-77-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,0 and 3 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77803-77:
(7*7)+(6*7)+(5*8)+(4*0)+(3*3)+(2*7)+(1*7)=161
161 % 10 = 1
So 77803-77-1 is a valid CAS Registry Number.

77803-77-1Relevant articles and documents

Hetero-Diels-Alder reaction of phosphinyl and phosphonyl nitroso alkenes with conjugated dienes: An aza-Cope rearrangement

De Los Santos, Jesus M.,Ignacio, Roberto,Rubiales, Gloria,Aparicio, Domitila,Palacios, Francisco

experimental part, p. 6715 - 6725 (2011/10/09)

Phosphorylated nitroso alkenes react with cyclic dienes such as cyclopentadiene or cyclohexadiene to afford hetero Diels-Alder-type cycloadducts where the nitroso alkene participates as dienophile component and the cyclic olefin acts as the 4π-electron (diene) system. Subsequent aza-Cope rearrangement affords highly functionalized 5,6-dihydro-4H-1,2-oxazines. Conversely, the reaction of TMS-substituted cyclopentadiene (dienophile) with nitroso alkenes as heterodienes leads directly to bicyclic 1,2-oxazines. Theoretical studies are in agreement with the experimental results and with the new aza-Cope rearrangement proposed.

THE MICROBIAL REDUCTIVE SPLITTING OF THE N-O BOND OF DIHYDROOXAZINES; AN ALTERNATIVE TO THE CHEMICAL REDUCTION

Klier, K.,Kresze, G.,Werbitzky, O.,Simon, H.

, p. 2677 - 2680 (2007/10/02)

In the presence of artificial mediators many bacteria reductively split the N-O bond of dihydrooxazines in a chemoselective way if hydrogen is used as an electron source.The yields as determined by HPLC are almost quantitative i.e. considerably better tha

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