When the compound below is treated with catalytic sulfuric acid, an equilibrium mixture of many possible compounds results. Which of the following exists in the lowest concentration (essentially zero) among those products? (Hint: The first step can be either protonation of the alcohol or protonation of the alkene; Follow the possibilities from both paths). Note: Even if you immediately find the answer, it is worth your time to figure out how the other products ARE made by writing the mechanisms that lead to them. This is always good practice. ost (A) OH (B) [H₂SO4] ??? OH (D)

Organic chemistry student Everett has set up two separate electrophilic addition reactions with 2-butyne (shown below). In reaction (i) the alkyne is treated with 1 equivalent of HBr, which successful provides (Z)-2-bromo-2-butene. In reaction (ii) the alkyne is subjected to a two-step hydroboroation/oxidation sequence. Interestingly, Everett’s second reaction fails to provide the desired methyl ketone and instead has provided butan-2,3-diol. (a) Provide the structure of intermediate X form the first step of reaction (ii). (b) Briefly explain (use structures if necessary) why reaction (i) provided an alkene where as reaction (ii) provided an alkane when only 1 equivalent of the electrophile was used in each reaction.

Substitution and elimination: predict the product Maximum allowed tries per question: Unlimited (7) Draw the major organic product of the reaction. Follow this procedure: determine whether the reaction conditions are acidic or basic; identify the most nucleophilic/basic atom, the electrophilic atom, and the leaving group; predict whether elimination or substitution will occur; and then draw the product. Indicate the stereochemistry at every stereocenter with a single wedged (up), hashed (down), or wavy (a mixture of up and down; either) bond. Launch MarvinJSTM viewer or click image to copy source CH3 H3C EtONa EtOH Br

BS21008 Organic Chemistry for the Life Sciences Assignment Week 7 Bearing in mind Huckel's rule, determine whether each of the heterocycles involved in the following acid-base equilibria is aromatic or not (show your working). Use your findings to explain which of the nitrogen atoms in the indazole ring is more basic, i.e. which would be the product of indazole protonation, compound A or compound B? + H* + H* N: - H* - H* H CH3 CH3 CH3 A 1-methyl-1H-indazole

IF esize this compound by the → t-butyl ethyl ether Show the steps necessary to synthesize this compound by a rignard reaction. Start with an alkyl halide; after that you can add any organic or inorganic compound. → 1-hexanol Consider the following compounds:

Give correct detailed mechanism Solution with explanation needed.   Don't give Handwritten answer

How to do part (a) of this question? I am struggling to figure out how to draw the arrows for electron movement. *Need detailed mechanism.

Please don't provide handwritten solution ....

Draw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. OH CH3 + + H3C CH₂ CH3 First stage in synthesis of the preservative BHT • You do not have consider stereochemistry. • Include all valence lone pairs in your answer. • In cases where there is more than one answer, just draw one. ▼ H3PO4 ? OH CH3 CH3 CH3 CH3

Please answer with All the required steps needed to solve it