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1312320-28-7

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1312320-28-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1312320-28-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,1,2,3,2 and 0 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1312320-28:
(9*1)+(8*3)+(7*1)+(6*2)+(5*3)+(4*2)+(3*0)+(2*2)+(1*8)=87
87 % 10 = 7
So 1312320-28-7 is a valid CAS Registry Number.

1312320-28-7Downstream Products

1312320-28-7Relevant articles and documents

Rh(I)-catalyzed formal [6 + 2] cycloaddition of 4-allenals with alkynes or alkenes in a tether

Oonishi, Yoshihiro,Hosotani, Akihito,Sato, Yoshihiro

, p. 10386 - 10389 (2011/08/22)

Rh(I)-catalyzed formal [6 + 2] cycloaddition of allenal 6 having an alkyne or alkene in a tether proceeded smoothly, giving 5-8- and 6-8-fused bicyclic ketone derivatives 7 in good to excellent yields. It was also found that cyclization of enantiomerically enriched (S)-6a (94% ee) gave cyclic ketone derivative (S)-7a in high yield with reasonable chirality transfer (86% ee). This result indicates that this cyclization proceeds through stereoselective formation of rhodacycle H′ followed by insertion of a multiple bond.

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