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577743-54-5

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577743-54-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 577743-54-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,7,7,7,4 and 3 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 577743-54:
(8*5)+(7*7)+(6*7)+(5*7)+(4*4)+(3*3)+(2*5)+(1*4)=205
205 % 10 = 5
So 577743-54-5 is a valid CAS Registry Number.

577743-54-5Downstream Products

577743-54-5Relevant articles and documents

Nickel-catalyzed reductive coupling of alkynes and epoxides

Molinaro, Carmela,Jamison, Timothy F.

, p. 8076 - 8077 (2003)

Nickel-catalyzed, intramolecular and intermolecular reductive coupling of alkynes and epoxides affords synthetically useful homoallylic alcohols of defined alkene geometry. Very high regioselectivity is generally observed, and cyclizations proceed with complete selectivity for endo epoxide opening. This catalytic reaction represents the first use of a non-π-based electrophile in a growing class of nickel-catalyzed, multicomponent coupling reactions, and is the first catalytic method of reductive coupling of alkynes and epoxides that is effective for both intermolecular and intramolecular cases, and mechanistically distinct from these, possibly involving a nickella(II)oxetane. Copyright

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