Kepner-Tregoe Decision Analysis as a Tool To Aid Route Selection. Part 2. Application to AZD7545, a PDK Inhibitor
摘要:
Kepner-Tregoe decision analysis was formally used as an aid to route selection, as outlined in the preceding paper. Over 40 paper routes were assessed for suitability for both immediate and longer term manufacture of AZD7545, a compound in the early stages of development. Eight routes were then investigated in fall in the laboratory, and a further four in part, over a period of 3-4 months. From this exercise, the preferred long-term manufacturing route was identified before the first pilot scale manufacture had been completed. This route selection exercise worked well in this case where a large number of potential routes had to be considered using limited resources. It was also an effective means of bringing some long-term manufacturing issues to the fore at an early stage in development.
A Convenient Synthesis of 2-Nitrophenols from 1,2-Dichlorobenzenes
作者:Joseph Zilberman、David Ioffe、Igal Gozlan
DOI:10.1055/s-1992-26192
日期:——
Aromatic nucleophilic substitution of 1,2-dichlorobenzenes 1 possessing a strong electron-withdrawing group in the 4-position with a nitrite ion give the corresponding 2-nitrophenols 5.
An efficient heterogeneous copper fluorapatite (CuFAP)-catalysed oxidative synthesis of diaryl sulfone under mild ligand- and base-free conditions
作者:Rohit B. Kamble、Santosh S. Chavan、Gurunath Suryavanshi
DOI:10.1039/c8nj04845b
日期:——
A simple, eco-friendly and efficient method for the synthesis of unsymmetrical diaryl sulfones using heterogeneous copper fluorapatite (CuFAP)-catalysed coupling of aryl sulfonic acid and phenyl boronic acid has been developed with good to excellent yields without use of any ligand, base or co-catalyst. Broad substrate scope and gram scale operations are the important features of this method.
Aryl sulfones have been synthesized by the reaction of sodium p-toluenesulfinate and arenediazonium salts using a CuI catalyzed homogeneous system.
芳基磺酮是通过钠对甲基磺酸钠和芳基重氮盐在CuI催化的均相体系中反应合成的。
Organic photoredox catalysis enabled cross-coupling of arenediazonium and sulfinate salts: synthesis of (un)symmetrical diaryl/alkyl aryl sulfones
作者:Ruchi Chawla、Lal Dhar S. Yadav
DOI:10.1039/c9ob00864k
日期:——
We disclose herein the first transition-metal- and external oxidant/reductant-free visible-light-mediated synthesis of (un)symmetrical diaryl/alkyl aryl sulfones from arenediazonium tetrafluoroborates and sodium sulfinates using eosin Y as an organic photoredox catalyst. The utilization of visible light as an inexpensive and ecosustainable energy source, operational simplicity, ambient temperature