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28991-15-3

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28991-15-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 28991-15-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,8,9,9 and 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 28991-15:
(7*2)+(6*8)+(5*9)+(4*9)+(3*1)+(2*1)+(1*5)=153
153 % 10 = 3
So 28991-15-3 is a valid CAS Registry Number.

28991-15-3Downstream Products

28991-15-3Relevant articles and documents

Cobalt-catalyzed intermolecular C(sp2)-O cross-coupling

Kundu, Debasish,Tripathy, Manisha,Maity, Pintu,Ranu, Brindaban C.

, p. 8727 - 8732 (2015)

Cobalt(II)-catalyzed C(sp2)-O cross-coupling between aryl/heteroaryl alcohols and vinyl/aryl halides in the presence of CuI has been achieved under ligand-free conditions. In this reaction, copper plays a significant role in transmetalation rather than being directly involved in the C-O coupling. This unique Co/Cu-dual catalyst system provides an easy access to a library of aryl-vinyl, heteroaryl-styryl, aryl-aryl, and heteroaryl-heteroaryl ethers in the absence of any ligand or additive.

Palladium-catalyzed oxidative cyclization of 3-phenoxyacrylates: An approach to construct substituted benzofurans from phenols

Li, Chengliang,Zhang, Yicheng,Li, Pinhua,Wang, Lei

body text, p. 4692 - 4696 (2011/07/08)

In this paper, a novel and applicable synthesis of benzofurans from commercially available phenols and propiolate through the direct oxidative cyclization has been developed. In the presence of Pd(OAc)2/PPh 3 and CF3COsub

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