37941-24-5Relevant articles and documents
The Stronger the Better: Donor Substituents Push Catalytic Activity of Molecular Chromium Olefin Polymerization Catalysts
Enders, Markus,Hansen, Helge-Boj,Wadepohl, Hubert
supporting information, p. 11084 - 11093 (2021/06/27)
The donor strength of bifunctional pyridine-cyclopentadienyl ligands was altered systematically by the introduction of donating groups in the para-position of the pyridine. In the resulting chromium complexes an almost linear correlation between donor str
Flow synthesis of 2-methylpyridines via α-methylation
Manansala, Camille,Tranmer, Geoffrey K.
, p. 15797 - 15806 (2015/12/01)
A series of simple 2-methylpyridines were synthesized in an expedited and convenient manner using a simplified bench-top continuous flow setup. The reactions proceeded with a high degree of selectivity, producing α-methylated pyridines in a much greener fashion than is possible using conventional batch reaction protocols. Eight 2-methylated pyridines were produced by progressing starting material through a column packed with Raney nickel using a low boiling point alcohol (1-propanol) at high temperature. Simple collection and removal of the solvent gave products in very good yields that were suitable for further use without additional work-up or purification. Overall, this continuous flow method represents a synthetically useful protocol that is superior to batch processes in terms of shorter reaction times, increased safety, avoidance of work-up procedures, and reduced waste. A brief discussion of the possible mechanism(s) of the reaction is also presented which involves heterogeneous catalysis and/or a Ladenberg rearrangement, with the proposed methyl source as C1 of the primary alcohol.
Pyridine compounds and their pharmaceutical use
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, (2008/06/13)
A compound of formula (I) wherein each symbol is as defined in the specification, and pharmaceutically acceptable salts thereof. The compound (I) of the present invention and pharmaceutically acceptable salts thereof possess a strong inhibitory activity on the production of nitric oxide (NO), and are useful for prevention and/or treatment of NOS(nitric oxide synthasey)-mediated diseases such as adult respiratory distress syndrome, myocarditis, synovitis, septic shock, insulin-ependent diabetes mellitus, ulcerative colitis, cerebral infarction, rheumatoid arthritis, osteoarthritis, osteoporosis, systemic lupus erythematosus, rejection by organ transplantation, asthma, pain, ulcer, and the like in human being and animals.
