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60785-20-8

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60785-20-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 60785-20-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,0,7,8 and 5 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 60785-20:
(7*6)+(6*0)+(5*7)+(4*8)+(3*5)+(2*2)+(1*0)=128
128 % 10 = 8
So 60785-20-8 is a valid CAS Registry Number.

60785-20-8Relevant articles and documents

Enantioselective Heck Arylation of Acyclic Alkenol Aryl Ethers: Synthetic Applications and DFT Investigation of the Stereoselectivity

Polo, Ellen Christine,Wang, Martí Fernández,Angnes, Ricardo Almir,Braga, Ataualpa A. C.,Correia, Carlos Roque Duarte

supporting information, p. 884 - 892 (2019/12/30)

Herein we report the enantioselective Heck-Matsuda arylation of acyclic E and Z-alkenyl aryl ethers. The reactions were carried out under mild conditions affording the enantioenriched benzyl ethers in a regioselective manner, moderate to good yields (up to 73%), and in good to excellent enantiomeric ratios (up to 97:3). The enantioselective Heck-Matsuda arylation has shown a broad scope (25 examples), and some key Heck-Matsuda adducts were further converted into more complex and valuable scaffolds including their synthetic application in the synthesis of (R)-Fluoxetine, (R)-Atomoxetine, and in the synthesis of an enantioenriched benzo[c]chromene. Finally, in silico mechanistic investigations into the reaction's enantioselectivity were performed using density functional theory. (Figure presented.).

Metal-free oxidative cyclization of alkynyl aryl ethers to benzofuranones

Graf, Katharina,Ruehl, Carmen L.,Rudolph, Matthias,Rominger, Frank,Hashmi, A. Stephen K.

supporting information, p. 12727 - 12731 (2013/12/04)

Readily available phenols can be converted into substituted aryl alkynyl ethers, which react with an N-oxide as an oxidant and catalytic amounts of a Bronsted acid to provide benzofuranones. If non-terminal alkynyl ethers are applied, a 1,2-hydride shift takes place and phenyl acrylates are obtained. Thus activated alkynes can serve as α-oxy carbene precursors even in the absence of a metal catalyst. Copyright

Palladium-catalyzed modular assembly of electron-rich alkenes, dienes, trienes, and enynes from (E)-1,2-dichlorovinyl phenyl ether

Geary, Laina M.,Hultin, Philip G.

experimental part, p. 6354 - 6371 (2010/12/19)

We have devised a modular construction of electron-rich alkene derivatives from trichloroethylene (TCE). The three C-l bonds of TCE have sufficiently different reactivities that they can be sequentially and selectively functionalized. Following the substitution of one chlorine by phenol to generate (E)-1,2-dichlorovinyl ether, the C1-Cl group next participates in palladium-catalyzed cross-coupling reactions with a variety of organometallic reagents. Subsequently, the C2-Cl group can engage in cross-couplings, while the C2-H may be deprotonated and quenched with an electrophile. Thus, isomerically pure tri- and tetrasubstituted electron-rich alkenes may be accessed in as few as two steps from simple and inexpensive starting materials. This method is ideally suited for diversity-oriented synthesis of highly conjugated molecules of interest as chromophores or as potential molecular electronics. It also gives access to diverse building blocks for further synthetic elaboration into high-value compounds.

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