what's the condensed structure of caffeine?
Write the condensed formula, molucular formula or draw structure
or isomer structure depending on what's missing
CH,CH CH(CH)2 CsHi2 NH2 (CH3)2C-CHCH2CH3 (CH3CH2CH2)2CHCI (CH3)3C-C(CH3)3
2. Draw the structure for caffeine. What part of caffeine is basic?
A Lewis structure of caffeine is given below. What parts of the structure of this molecule make caffeine basic? (Hint: what is missing from this diagram? ) H3C
Draw all the resonance structure of a caffeine
PRE-LABORATORY EXERCISES NAME: Isolation of Caffeine Draw the structure of caffeine. what are the chemical and biological properties of caffeine? What are tannins? Draw some representative structures. How are tannins removed using sodium carbonate? What other phytochemicals are found in tea and coffee? 4. 109
condensed structure for methoxycyclohexane
condensed structure for 4-ethoxynonane
Why caffeine is the strong absorber of ultraviolet light according to its structure?
condensed structure for
O-CH- CH3 СHз
Consider the structure of caffeine (re-draw it here), and answer the following questions from a structural perspective. Caffeine is an alkaloid and, as such, is weakly basic. Circle and label the basic atom or atoms (hints: consider the base in Experiment 4C, and consult the Derivative procedure on page 235). Identify (circle on your structure) and discuss two different structural features that would account for solubility in methylene chloride (hint: think intermolecular forces). Identify (circle on your structure) and discuss...