作者:Scott A. Sadler、Hazmi Tajuddin、Ibraheem A. I. Mkhalid、Andrei S. Batsanov、David Albesa-Jove、Man Sing Cheung、Aoife C. Maxwell、Lena Shukla、Bryan Roberts、David C. Blakemore、Zhenyang Lin、Todd B. Marder、Patrick G. Steel
DOI:10.1039/c4ob01565g
日期:——
The iridium-catalysed CâH borylation is a valuable and attractive method for the preparation of aryl and heteroaryl boronates. However, application of this methodology for the preparation of pyridyl and related azinyl boronates can be challenged by low reactivity and propensity for rapid protodeborylation, particularly for a boronate ester ortho to the azinyl nitrogen. Competition experiments have revealed that the low reactivity is due to inhibition of the active catalyst through coordination of the azinyl nitrogen lone pair at the vacant site on the iridium. This effect can be overcome through the incorporation of a substituent at C-2. Moreover, when this is sufficiently electron-withdrawing protodeborylation is sufficiently slowed to permit isolation and purification of the C-6 boronate ester. Following functionalization, reduction of the directing C-2 substituent provides the product arising from formal ortho borylation of an unhindered pyridine ring.
COMPOUNDS AND COMPOSITIONS FOR INHIBITING THE ACTIVITY OF ABL1, ABL2 AND BCR-ABL1
申请人:Furet Pascal
公开号:US20150183801A1
公开(公告)日:2015-07-02
The present invention relates to compounds of formula (I): in which Y, Y, R, R 2, R 3 and R 4 are defined in the Summary of the Invention; capable of inhibiting the activity of BCR-ABL1 and mutants thereof. The invention further provides a process for the preparation of compounds of the invention, pharmaceutical preparations comprising such compounds and methods of using such compounds in the treatment of cancers.
Compounds and compositions for inhibiting the activity of ABL1, ABL2 and BCR-ABL1
申请人:Furet Pascal
公开号:US09278981B2
公开(公告)日:2016-03-08
The present invention relates to compounds of formula (I): in which Y, Y, R, R 2, R 3 and R 4 are defined in the Summary of the Invention; capable of inhibiting the activity of BCR-ABL1 and mutants thereof. The invention further provides a process for the preparation of compounds of the invention, pharmaceutical preparations comprising such compounds and methods of using such compounds in the treatment of cancers.
Iridium‐Catalysed C−H Borylation of Fluoroarenes: Insights into the Balance between Steric and Electronic Control of Regioselectivity
作者:Mingyan Ding、Jonathan A. Reuven、Andrew C. Hones、Mark A. Fox、Patrick G. Steel
DOI:10.1002/ejoc.202201005
日期:2022.12.19
Iridium catalysed C−H borylation provides an effective method for late stage functionalization of fluorinated arenes and heteroarenes. The reaction occurs rapidly and efficiently with selectivity that can be best predicted using computed relative transition stage energies.