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139016-89-0

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139016-89-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139016-89-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,0,1 and 6 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 139016-89:
(8*1)+(7*3)+(6*9)+(5*0)+(4*1)+(3*6)+(2*8)+(1*9)=130
130 % 10 = 0
So 139016-89-0 is a valid CAS Registry Number.

139016-89-0Downstream Products

139016-89-0Relevant articles and documents

Asymmetric catalysis. Production of chiral diols by enantioselective catalytic intramolecular hydrosilation of olefins

Bergens, Steven H.,Noheda, Pedro,Whelan, John,Bosnich

, p. 2121 - 2128 (2007/10/02)

Rhodium(I) chiral diphosphine complexes efficiently and rapidly catalyze the intramolecular hydrosilation of silyl ethers derived from allylic alcohols. The efficiency and rates of intramolecular hydrosilations were determined for a variety of silyl and olefin substituents. The catalysts were found to tolerate a wide variety of silyl substituents, although terminal alkyl olefin substituents were found to retard catalysis. Terminal aryl olefin substituents were found to be hydrosilated efficiently and at reasonable rates. One of the chiral catalysts is highly enantioselective for terminal aryl olefin substituents. Almost quantitative ee's are obtained. Moreover, the ee's are only slightly sensitive to aryl and olefin substituents, suggesting that this enantioselective catalysis can provide a wide range of chiral species. Oxidative cleavage of the hydrosilation products gives chiral diols.

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