Interpretation:
The principal product in each of the given reactions is to be predicted.
Concept introduction:
The conjugate base of alkyne acts as a good nucleophile. On reaction with primary
Alkynes, on hydration, undergo addition of a molecule of water. The hydrogen atom is bonded to less substituted triple bonded carbon, and the hydroxyl groupis bonded to more substituted triple bonded carbon atom and forms a
Germinal and vicinal dihalides, on reaction with a strong base, undergo double dehydrohalogenation and form alkynes.
Ozonolysis of alkynes involves the cleavage of triple bond and formation of carboxylic acids as products. An acyclic alkyne forms two carboxylic acids whereas a cyclic alkyne forms a single product with two
Want to see the full answer?
Check out a sample textbook solutionChapter 9 Solutions
ORGANIC CHEMISTRY (LL)-W/SOLN.>CUSTOM<
- Provide a step-by-step mechanism to account for the product of the following reaction. Show the structure of each of the intermediates and use curved arrows to indicate electron flow in each of these stepsarrow_forwardWith POCl3, If dehydration is not possible, a substitution can occur instead. Provide a mechanism to account for the formation of this compound. Be sure that your steps are as simple as possible and conform to the conditions of the reaction.arrow_forwardPredict the products for each of the following reactions and propose a mechanism that explains the formation of each product.arrow_forward
- Predict (by name) the products of the following reaction.arrow_forwardA task is assigned to an undergraduate student to test two samples (known as compounds K and L) in the laboratory. She placed these two compounds through various scientific tests. She discovered that these compounds have the same molecular formula, CSHSO. When treated with 2,4-dinitrophenylhydrazine, all of these compounds produce brightly coloured precipitate, and both are reduced to an organic compound with the molecular formula C§H100. However, compound K can be easily oxidized by chromic acid to formed compound N and vice versa for compound L. Furthermore, when both compounds react with Fehling's solutions, they produce negative results. However, only compound K forms a silver mirror when it reacts with Tollen's reagent, and compound L does not. Identify the possible structural formulae for compounds K, L, and N by ignoring their position isomerism. Indicate the formation of compound N from compound K. Predict the chemical reaction that occurs when compound L reacts with 2,4-…arrow_forward3) A common practice that organic chemists work on is a process known as retrosynthesis. In this a chemist will take known reactants and devise a synthetic pathway to produce the desired products using reactions that they know. As you proceed through organic chemistry you will be tasked with thinking about this process. How would you make the desired final product starting from the alkyne. It will take a couple of reactions. Please show the reagents necessary. And for your last step please show the arrow pushing. Starting material Br Product Br ...arrow_forward
- Predict the products of the following reactions. propylene oxide + methylamine (CH3NH2)arrow_forward3-Chloro-2-methylpropene reacts with sodium methoxide in methanol to form 3-methoxy-2-methylpropene. For each of the following changes in the reaction conditions, state whether the reaction rate would increase, decrease, or remain the same. Explain your reasoning. In some cases the identity of the major organic product would be expected to change; in such cases, give the expected major product. (a) the same quantities of reagents are dissolved in half the volume of methanol (b) 3-bromo-2-methylpropene is used in place of 3-chloro-2-methylpropene (c) sodium methanethiolate (CH3SNa) is used in place of of sodium methoxidearrow_forwardWhen exactly 1 mole of methane is mixed with exactly 1 mole of chlorine and light is shone on the mixture, a chlorination reaction occurs. The products are found to contain substantial amounts of di-, tri-, and tetrachloromethane, as well as unreacted methane. Explain how a mixture is formed from this stoichiometric mixture of reactants, and propose mechanisms for the formation of these compounds from chloromethane.arrow_forward
- Please provide a step by step list explaining the mechanism for the reactionsarrow_forwardAldehydes and ketones react with thiols to yield thioacetals just as they react with alcohols to yield acetals. Predict the product of the following reaction, and propose a mechanism:arrow_forwardA problem often encountered in the oxidation of primary alcohols to acids is that esters are sometimes produced as by-products. For example, oxidation of ethanol yields acetic acid and ethyl acetate: Propose a mechanism to account for the formation of ethyl acetate. Take into account the reversible reaction between aldehydes and alcohols:arrow_forward