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1351337-48-8

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1351337-48-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1351337-48-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,5,1,3,3 and 7 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1351337-48:
(9*1)+(8*3)+(7*5)+(6*1)+(5*3)+(4*3)+(3*7)+(2*4)+(1*8)=138
138 % 10 = 8
So 1351337-48-8 is a valid CAS Registry Number.

1351337-48-8Downstream Products

1351337-48-8Relevant articles and documents

Achieving High Ortho Selectivity in Aniline C-H Borylations by Modifying Boron Substituents

Smith, Milton R.,Bisht, Ranjana,Haldar, Chabush,Pandey, Gajanan,Dannatt, Jonathan E.,Ghaffari, Behnaz,Maleczka, Robert E.,Chattopadhyay, Buddhadeb

, p. 6216 - 6223 (2018/05/23)

High ortho selectivity for Ir-catalyzed C-H borylations (CHBs) of anilines results when B2eg2 (eg = ethylene glycolate) is used as the borylating reagent in lieu of B2pin2, which is known to give isomeric mixtures with anilines lacking a blocking group at the 4-position. With this modification, high selectivities and good yields are now possible for various anilines, including those with groups at the 2- and 3-positions. Experiments indicate that ArylN(H)Beg species are generated prior to CHB and support the improved ortho selectivity relative to B2pin2 reactions arising from smaller Beg ligands on the Ir catalyst. The lowest-energy transition states (TSs) from density functional theory computational analyses have N-H···O hydrogen-bonding interactions between PhN(H)Beg and O atoms in Beg ligands. Ir-catalyzed CHB of PhN(H)Me with B2eg2 is also highly ortho-selective. 1H NMR experiments show that N-borylation fully generates PhN(Me)Beg prior to CHB. The TS with the lowest Gibbs energy was the ortho TS, in which the Beg unit is oriented anti to the bipyridine ligand.

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