Electrophilic Addition - Mechanism and Product

Show the mechanism and product of the following electrophilic addition to a conjugated diene using curved arrows to show bond-making and bond-breaking process... (See attachement for full question)

Provide Methods and Reagents to Synthesize the Product.

Provide the methods and reagents to synthesize the product from the given starting material. These involve more than one reaction. (4pts each) a) CH3CH2CH2Br ---> CH3CH2CH2CH=CH2 b) Please see attached for full question.

Show the Mechanism and Product of the following SN1 reaction

Show the mechanism and product of the following Sn1 reaction using curved arrows to show the bond-making and bond-breaking process. Show intermediates. Label the leaving group, nucleophile and electrophile. in the blank at the bottom left, indicate which reaction coordinate diagram is correct for this rraction. Is the starting material optically active? Is the product optically active? (8pts) Please see attached for full question.

Synthesis

Outline synthesis of 1,3-butadiene starting from 1,4-Dibromobutane ****I need problem worked out with correct answer.

Organic Synthesis

Outline synthesis of 1,3-butadiene starting from... (See attachment for full question)