The stereochemical pathway for the hydrogenation of an alkene with a metal catal

Question

The stereochemical pathway for the hydrogenation of an alkene with a metal catalyst, such as platinum, occurs via A) anti-Markovnikov addition. B) Markovnikov addition. C) anti addition. D) syn addition. Which point on the potential energy diagram corresponds to the species below for the reaction of 2-methylpropene with hydrogen chloride? Predict which of the following alkenes reacts the fastest with HCl. A) CH_3CH_2CH_2CH_2CH=CH_2 B) (CH_3)_2C=CHCH_2CH_3 C) cis-CH_3CH_2CH=CHCH_2CH_3 D) trans-CH_3CH_2CH=CHCH_2CH_3 Which of the following series of reactions would convert cyclohexanol to 1, 2-epoxyeyelohexane? A) (1) NaOCH_2CH_3 (2) Br_2, H_2O B) (1) Br_2, light (2) NaOCH_2H_3 C) (1) H_2SO_4, heat D) (1)H_2SO_4, heat (2) O_3 (3) Zn, H_2O

Explanation / Answer

36 (D) BECAUSE FOR HYDROGINATION METAL SURFACE USED 37 (B) 38(B) DUE TO THE FORMATION OF TERTIARY CARBOCATION 39 (C) FIRSTLY DUE TO DEHYDRATION THE PI BOND FORMED THEN EPOXIDATION BY PEROXIDE

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