Which of the following best describes th...

Which of the following best describes the flow of electrons in the acid-catalyzed dimerization of `(CH_3)_2C = CH_2` ?

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Carbocation formed will attacked by alkene.

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1) The -=C-H unit of an alkyne is more acidic than a C – H unit of an alkene or alkane, allowing acetylene and terminal alkynes to be converted to their conjugate bases -= C . 2) Unlike alkenes, alkynes are reduced by metals, especially Li, Na and K. 3) Unlike alkenes, alkynes can undergo nucleophilic as well as electrophilic addition. Which of the following best describes what happens in the first step in the mechanism of the reaction shown? CH_3 CH_2CH_2CHBr_2 + 3NaNH_2 overset(NH_3)to CH_3CH_2C -=CNa +2NaBr +3NH_3

Which of the following name(s) is/are appropriate for CH_3 CH_2 COOH

Which one of the following is used to obtain the maximum percentage of terminal alkene by dehydrohalogenation of CH_3CH_2C(CH_3)_2 Br ?

Which of the following alkanes will give single product on methylene insertion? A) CH_3-CH_3 B) CH_3-CH-2-CH-3 C) (CH_3)_4C D) CH_3CH_2C (CH_3)_2CH_2CH_3 E) (CH_3)_2CHCH(CH_3)_2

Which of the following reagents would be best for converting phenylacetamide (C_(6)H_(5)CH_(2)CH_(2)NH_(2)) ?

Which of the following procedures would be best for preparing isobutylisopropylamine, (CH_(3))_(2)CHNHCH_(2)CH(CH_(3))_(2) ?

Which of the following compounds will show cis-trans isomerism? (i) (CH_3)_2C=CH-C_2H_5 (ii) CH_2=CBr_2 (iii) C_6H_5CH=CH-CH_3 (iv) CH_3CH=C Cl CH_3

Classify the following reactions in one of the reaction type studied in this unit. (a) CH_(3)CH_(2)Br+HS^(-)rarrCH_(3)CH_(2)SH (b) (CH_(3))_(2)C=CH_(2)+Hclrarr(CH_(3))_(2)ClC (c ) CH_(3)CH_(2)Br+HO^(-)rarrCH_(2)=CH_(2)+H_(2)C (d) (CH_(3))_(3)C-CH_(2)OH+HBr rarr(CH_(3))_(2)CBrCH_(2)CF

MS CHOUHAN-HYDROCARBONS (ALKENES)-LEVEL-2

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