21905-86-2, One of the major reasons is to use measurements of the macroscopic properties of a system, the rate of change in the concentration of reactants or products with time, to discover the sequence of events that occur at the molecular level. 21905-86-2, introduce a new downstream synthesis route.
EXAMPLE 42 2-(2-ethoxyethoxy)ethyl cinnoline-4-carboxylate (42) 1.07 g of CDIT was added to a mixture of 1.04 g of 1 in 70 ml of dry THF under nitrogen, the mixture was stirred at room temperature for 4 hours, 1.6 g of 2-(2-ethoxyethoxy)ethanol and 0.032 g of sodium methoxide were added and the mixture was stirred at room temperature over a weekend. Then the solvent was stripped, and the residue was dissolved in methylene chloride. The solution was washed with water, dried (MgSO4) and stripped of solvent. The residue was flash-chromatographed on silica gel, using a 1:4 v:v mixture of ethyl acetate and methylene chloride as eluent, to give 42, as a yellow oil.
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Reference£º
Patent; E. I. Du Pont de Nemours and Company; US4699651; (1987); A;,
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