The nazarov cyclization is a versatile method for making five-membered rings, a common feature in many natural products. this process has been used successfully in the preparation of many complex structures with a wide variety of biological activities, including antibiotic and anticancer properties (org. lett. 2003, 5, 4931–4934). the key step of the nazarov cyclization involves a lewis acid, such as alcl3. in the first step of the mechanism, compound 1 interacts with alcl3 to form a lewis acid-lewis base complex. determine the site within compound 1 that interacts most strongly with the lewis acid and justify your choice by exploring the resonance structures of the resulting complex:
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Chemistry, 22.06.2019 12:20
Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.
Answers: 3
Chemistry, 22.06.2019 13:30
Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?
Answers: 1
Chemistry, 23.06.2019 00:30
What is the percent by mass of magnesium sulfate in mgso4.7h2o
Answers: 3
The nazarov cyclization is a versatile method for making five-membered rings, a common feature in ma...
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