A highly efficient approach to vanillin starting from 4-cresol
作者:Jian-An Jiang、Cheng Chen、Ying Guo、Dao-Hua Liao、Xian-Dao Pan、Ya-Fei Ji
DOI:10.1039/c4gc00003j
日期:——
A highly efficient approach to the famous flavor and fragrance compound vanillin has been developed starting from 4-cresol with the attention focused on improving the sustainability of all the reactions. The approach involves a three-step sequence of the quasi-quantitative selective clean oxybromination of 4-cresol, the high-yield selective aerobic oxidation of 2-bromo-4-cresol, and the quantitative methoxylation of 3-bromo-4-hydroxybenzaldehyde with the recovery of pure methanol. Herein, the pivotal oxidation and methoxylation reactions are logically investigated and developed into two concise methodologies. As a green alternative, the approach holds significant value for the sustainable manufacturing of vanillin.
Cu(OAc)<sub>2</sub>-catalyzed remote benzylic C(sp<sup>3</sup>)–H oxyfunctionalization for CO formation directed by the hindered para-hydroxyl group with ambient air as the terminal oxidant under ligand- and additive-free conditions
作者:Jian-An Jiang、Cheng Chen、Jian-Gang Huang、Hong-Wei Liu、Song Cao、Ya-Fei Ji
DOI:10.1039/c3gc41946k
日期:——
A hindered para-hydroxyl group-directed remotebenzylicC(sp3)–H oxyfunctionalization has been developed for the straightforward transformation of 2,6-disubstituted 4-cresols, 4-alkylphenols, 4-hydroxybenzyl alcohols and 4-hydroxybenzyl alkyl ethers into various aromatic carbonyl compounds. The ligand- and additive-free Cu(OAc)2-catalyzed atmospheric oxidation mediated by ethylene glycol unlocks a
[EN] BIARYL DERIVATIVES AS GPR120 AGONISTS<br/>[FR] DÉRIVÉS DE BIARYLE EN TANT QU'AGONISTES DE GPR120
申请人:LG LIFE SCIENCES LTD
公开号:WO2014209034A1
公开(公告)日:2014-12-31
The present invention relates to biaryl derivatives of Formula 1, a method for preparing the same, a pharmaceutical composition comprising the same and use thereof. The biaryl derivatives of Formula 1 according to the present invention promote GLP-1 formation in the gastrointestinal tract and improve insulin resistance in the liver or in muscle due to anti-inflammatory action in macrophages, lipocytes, etc., and can accordingly be effectively used for preventing or treating diabetes, complications of diabetes, obesity, non-alcoholic fatty liver, steatohepatitis, osteoporosis or inflammation.
Pyrazolo [3,4-D] Pyrimidine Derivatives Useful to Treat Respiratory Disorders
申请人:Bruce Ian
公开号:US20140051698A1
公开(公告)日:2014-02-20
The present invention concerns a compound of formula (I)
or a pharmaceutically acceptable salt or solvate thereof, where R
1
-R
3
and Y are defined in the description, and its use in the treatment of disorders in which pi3 kinase is implicated.
PYRAZOLO [3,4-D] PYRIMIDINE DERIVATIVES USEFUL TO TREAT RESPIRATORY DISORDERS
申请人:Bloomfield Graham Charles
公开号:US20140235632A1
公开(公告)日:2014-08-21
The present invention concerns a compound of formula (I)
or a pharmaceutically acceptable salt or solvate thereof, where R
1
-R
3
and Y are defined in the description, and its use in the treatment of disorders in which pi3 kinase is implicated.