HBr

Write a plausible mechanism for this transformation. Only two sequential pericyclic reactions are required.

Draw the complete mechanism for the Grignard reaction of acetone (CH3)2C=O with PhMgBr followed by treatment with water. Be sure to show all starting materials, products, intermediates, and the required curved arrows to show the movement of electrons.

1) a) Propose a detailed mechanism for the reaction of 2-bromo-2,3-dimethylbutane with sodium methoxide (NaOCH3), showing formation of the major product. Please include: 1) a perspective diagram of the substrate 2) a Newman projection 3) a perspective diagram illustration of the transition state 4) curved arrows, lone pairs, formal/partial charges etc. as appropriate Special Request: Please don't do anything with the spectator ion. b) Draw a simple ('flat,' no dashes/wedges required) Lewis diagram of the minor product. 1) Why is it minor? 2) How would you alter the reaction conditions given to favor the minor product?

1. Take a close look at the following reactions. (a) Draw the product in the box below. (b) Provide the mechanism in the space below the reaction scheme. H₂O, H₂SO4

Provide the complete mechanism using Curved Arrow Formalism for the reaction of 1-chloro-1-methylcyclopentane treated with NaOMe in MeOH. If more than one product is formed, which is the major, minor, and very minor product? Is the reaction SN1, SN2, E1, or E2. I appreciate the help on this question.

Select the major product from the reaction sequence shown. 1) MezNH, [TSOH], - H2O 2) 3) HO مال منه NMez .OH ? ka ta

Please provide a detailed mechanism for the following transformation. Also, show the appropriate curved arrows to rationalize the next step. The quality of the electron pushing counts.

Provide mechanism and major organic product. 1) N2OCH,CH, CH,CH-OH 2) H,0 d.

1. (a) Propose structure of the major product when A is reacted with dil. H2SO4. (b) Propose a mechanism for the reaction. Show all intermediate structures and all electron flow with arrows. OH dil. H2SO4