Investigations on the reactivity of arylboronic acid with phenolic pyrazole

Kishore, P. R. S.; Jami, Ananda Kumar; Baskar, Viswanathan

doi:10.1016/j.ica.2011.01.104

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Cited by 5 publications

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“…Other 23 distinct resonances were observed in the 1 H‐decoupled 13 C‐NMR spectrum of 6b in agreement with the assigned structure. The 11 B‐NMR spectrum of 6b showed a fairly broad signal at 2.85 ppm in agreement with the known tetrahedrally coordinated boronate complexes by the use of tridentate NNO ligands with positively charged B‐atom . Partial assignments of these resonances are given in Experimental Part .…”

Section: Resultssupporting

confidence: 90%

Bridgehead Bicyclo[4.4.0]boron Heterocycles: A One‐Pot Four‐Component Synthesis of Dibenzo[e,i][1,3,7,2]oxadiazaborecin‐8(7H)‐ones

Adib

Shabani

Sheikhi

et al. 2016

Helvetica Chimica Acta

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A one‐pot four‐component synthesis of 6‐aryl‐6H‐dibenzo[e,i][1,3,7,2]oxadiazaborecin‐8(7H)‐ones is described. Heating a mixture of isatoic anhydride and a benzylamine afforded the corresponding anthranilamide derivative, which was condensed with a 2‐hydroxybenzaldehyde and an arylboronic acid under solvent‐free conditions to produce bridgehead bicyclo[4.4.0]‐boron heterocycles in good to excellent yields. Single‐crystal X‐ray analysis conclusively confirms the structures of the obtained bridgehead bicyclic 6–6 heterocyclic compounds.

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Section: Resultssupporting

confidence: 90%