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67760-88-7

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67760-88-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67760-88-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,7,6 and 0 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 67760-88:
(7*6)+(6*7)+(5*7)+(4*6)+(3*0)+(2*8)+(1*8)=167
167 % 10 = 7
So 67760-88-7 is a valid CAS Registry Number.

67760-88-7Downstream Products

67760-88-7Relevant articles and documents

The organocatalytic asymmetric prins cyclization

Tsui, Gavin Chit,Liu, Luping,List, Benjamin

supporting information, p. 7703 - 7706 (2015/06/25)

We describe here the design and development of an organocatalytic Prins cyclization. In the presence of a confined chiral imidodiphosphoric acid catalyst, salicylaldehydes react with 3-methyl-3-buten-1-ol to afford highly functionalized 4-methylenetetrahydropyrans in excellent regio- and enantioselectivity. The extreme steric demand of the acid catalyst is key for the success of this transformation. A bulky cat.: In an organocatalytic asymmetric Prins cyclization, salicylaldehydes react with 3-methyl-3-buten-1-ol in the presence of a chiral imidodiphosphoric acid catalyst to afford highly functionalized 4-methylenetetrahydropyrans in excellent regio- and enantioselectivities (see scheme).

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