نتایج جستجو برای: ethyl 24 dioxo 4 arylbutanoates
تعداد نتایج: 1577090 فیلتر نتایج به سال:
The betaine l,4-dim ethyl-3 ,6-dioxo-l,2 ,4 ,5-tetraz in -l-ium -5(4H )-id (1) im presses by its deep blue colour which is quite unusual for a simple six-membered ring betaine (in dioxane: Amax (log e) = 603 (3.49), 571 (3.50), 227 nm (4.23)) [1], In acidic solu tion 1 is p ro tonated ; it dissolves in weak acids, e. g. in H C O O H , with red colour (m onoprotonated form 2; 524 nm (3.56)) and...
In the title compound, C(18)H(21)N(5)O(4), the diazepine ring adopts a boat conformation with the triazolylmethyl-bearing C atom as the prow and the C atoms at the ring junction as the stern.
SYNTHESIS AND REACTIONS OF A TUNGSTEN DIOXO COMPLEX Deborah M. Bryant, BS Marquette University, 2010 Metal dioxo complexes are largely known for their ability to epoxidize olefins. The importance of these reactions is reflected in the patents for the ARCO and Halcon processes from the late 1960’s. It is very difficult to find literature that shows other indications for metal dioxo complexes. Ca...
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