16114-47-9Relevant articles and documents
Protodeboronation of (Hetero)Arylboronic Esters: Direct versus Prehydrolytic Pathways and Self-/Auto-Catalysis
Hayes, Hannah L. D.,Wei, Ran,Assante, Michele,Geogheghan, Katherine J.,Jin, Na,Tomasi, Simone,Noonan, Gary,Leach, Andrew G.,Lloyd-Jones, Guy C.
supporting information, p. 14814 - 14826 (2021/09/13)
The kinetics and mechanism of the base-catalyzed hydrolysis (ArB(OR)2→ ArB(OH)2) and protodeboronation (ArB(OR)2→ ArH) of a series of boronic esters, encompassing eight different polyols and 10 polyfluoroaryl and heteroaryl moieties, have been investigated by in situ and stopped-flow NMR spectroscopy (19F,1H, and11B), pH-rate dependence, isotope entrainment,2H KIEs, and KS-DFT computations. The study reveals the phenomenological stability of boronic esters under basic aqueous-organic conditions to be highly nuanced. In contrast to common assumption, esterification does not necessarily impart greater stability compared to the corresponding boronic acid. Moreover, hydrolysis of the ester to the boronic acid can be a dominant component of the overall protodeboronation process, augmented by self-, auto-, and oxidative (phenolic) catalysis when the pH is close to the pKaof the boronic acid/ester.
4-(8-METHOXY-1-((1-METHOXYPROPAN-2-YL)-2-(TETRAHYDRO-2H-PYRAN-4-YL)-1 H-IMIDAZO[4,5-C]QUINOLIN-7-YL)-3,5-DIMETHYLISOXAZOLE AND ITS USE AS BROMODOMAIN INHIBITOR
-
Page/Page column 8, (2013/03/26)
Novel quinoline compounds of formula (I), pharmaceutical compositions containing such compounds and their use in therapy, as bromodomain inhibitors.
Synthesis of 4-isoxazoleboronic acids: A new route to 4-isoxazolones
Cogoli, Augusto,Gruenanger, Paolo
, p. 19 - 22 (2007/10/07)
4-Isoxazoleboronic acids have been prepared by interaction of 4-isoxazolylmagnesium iodides with trimethyl borate. Some of their reactions are described; in particular oxidative deboronation represents a new useful route to 4-isoxazolones.