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133038-72-9

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133038-72-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133038-72-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,0,3 and 8 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 133038-72:
(8*1)+(7*3)+(6*3)+(5*0)+(4*3)+(3*8)+(2*7)+(1*2)=99
99 % 10 = 9
So 133038-72-9 is a valid CAS Registry Number.

133038-72-9Relevant articles and documents

Silaboration of [1.1.1]Propellane: A Storable Feedstock for Bicyclo[1.1.1]pentane Derivatives

Kondo, Masaki,Kanazawa, Junichiro,Ichikawa, Tomohiro,Shimokawa, Takumi,Nagashima, Yuki,Miyamoto, Kazunori,Uchiyama, Masanobu

supporting information, p. 1970 - 1974 (2019/11/16)

The silaboration of [1.1.1]propellane enables direct introduction of B and Si functional groups onto the bicyclo[1.1.1]pentane (BCP) scaffold in high yield under mild, additive-free conditions. The silaborated BCP can be obtained on a gram-scale in a single step without the need for column-chromatographic purification, and is storable and easy to handle, providing a versatile synthetic intermediate for BCP derivatives. We also describe various conversions of the C?B/C?Si bonds on the BCP scaffold, including development of a modified Suzuki–Miyaura cross-coupling reaction at the highly sterically hindered bridgehead sp3 carbon center of the BCP skeleton using a combination of highly activated BCP boronic esters, copper(I) oxide, and a PdCl2(dppf) catalyst system.

Enantioselective Rh-catalyzed hydrogenation of enol acetates and enol carbamates with monodentate phosphoramidites

Panella, Lavinia,Feringa, Ben L.,De Vries, Johannes G.,Minnaard, Adriaan J.

, p. 4177 - 4180 (2007/10/03)

(Chemical Equation Presented) Monodentate phosphoramidites, in particular PipPhos and its octahydro analogue, are excellent ligands for the rhodium-catalyzed asymmetric hydrogenation of aromatic enol acetates, enol carbamates, and 2-dienol carbamates up to 98% ee. These latter substrates were hydrogenated selectively to the carbamates of the allyl alcohol.

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