Which of these would be considered a basic nucleophile for reaction with an epoxide? (Select all that apply)多项选择题

A

HBr

B

H2O, H2SO4

C

LiAlH4

D

RMgBr

E

HCN

F

CH3ONa, CH3OH

G

NaOH, H2O

H

HCl

I

CH3OH, H2SO4

J

KCN, DMF

K

HS-

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类似问题

Epoxides react with nucleophiles on the more substituted side in acidic conditions. This will invert the stereochemistry at the reacting carbon and will not invert the stereochemistry at the non-reacting carbon. This is a SN2 mechanism.

Epoxides react with nucleophiles on the less substituted side in basic conditions. This will invert the stereochemistry at the reacting carbon and will not invert the stereochemistry at the non-reacting carbon. This is a SN2 mechanism.

Choose a, b, c or d as the best answer.2. Which statement would the author, most probably, agree with?

Section A Read this paragraph and answer the questions. It is widely believed that machines destroy jobs, and force the workers who did them into poverty. These beliefs have been held for hundreds of years, dating back to the Industrial Revolution. However, the fact that times of great innovation have not produced massive or long-term levels of unemployment or extensive poverty is not always understood. Unemployment remains an ongoing issue, but it should not be linked to the advance of technology. New technology can, by increasing business investment, lead to the creation of more jobs and lower unemployment. Therefore, predictions that technology will disadvantage large numbers of workers and cause widespread unemployment are unlikely to be accurate. Fill in the gap with ONE WORD from the paragraph. 1. Answer Question 1[input] about industrialisation causing job losses are not justified.

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